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HE PROVED IT FOR HIMSELF! The new Pyramid Imp is smaller, yet better than any other molded paper tubular capacitor; Operates at full rating of 100 °C (212 °F - boiling point); Exceeds moisture resistance requirements of U. S. Government specifications MIL- C -91A; Copperweld leads are securely imbedded to withstand 4 360° bends without breaking. These features, plus an almost indestructible thermo- setting plastic encasement make Pyramid Imps your best molded paper tubular capacitor. For full information on Pyramid capacitors and rectifiers, see your local distributor or write to PYRAMID ELECTRIC COMPANY 1445 Hudson Blvd., North Bergen, N. J.
T E X A S I N S T R U M E N T S P R O G R E S S R E P O R T O N H I G H F R E Q U E N C Y VHF transistors NOW! NEW `GROWN -DIFFUSED' TYPES COMMERCIALLY AVAILABLE IN PRODUCTION QUANTITIES HICH CAIN VHF TRANSISTORS with usable power levels and band widths are now immediately available from Texas Instruments ... another first for the leading producer of silicon and germanium transistors. Your design horizons are now extended to include all- transistor TV, FM, and VHF receivers ... and transistorized amplifier, oscillator, or switching applications in communications. telemetering, or radar. NEW VHF GERMANIUM TRANSISTOR OSCILLATING FREQUENCY IS ABOVE 250 MEGACYCLES ... alpha cutoff frequency is 200 mc. Typical gain is 12 db at 100 mc (unregenerative). This performance in a production transistor was unheard of prior to perfection of the "grown- diffused" method - an exclusive Texas Instruments technique. t NEW HF SILICON TRANSISTORS FREQUENCIES TO 30 MEGACYCLES, rated 30 volts and 125° C, make these "grown- diffused" units ideal for high temperature military and commercial applications. They increase to 10 the types of silicon transistors now available from Texas Instruments, and represent the continual improvement in frequency, gain, and power made by the pioneer producer of silicon transistors. OTHER NEW SEMICONDUCTOR DEVICES FROM TI NEW HIGH POWER TRANSISTORS - 12 -watt dissipation germanium power transistor and 8.75 -watt dissipation silicon power transistor. NEW HIGH VOLTAGE RECTIFIERS - full wave and single junction half wave 1500 - volt silicon units stable to 150° C. NEW HIGH CONDUCTANCE DIODES - 4 types of axial -lead silicon junction diodes with 100 ma forward currents and 0.1 Ica back currents. All these devices in production and available immediately. Write today! LOOK TO TI FOR: GERMANIUM VHF, POWER, RADIO, & GENERAL PURPOSE TRANSISTORS SILICON HF, POWER, & SMALL SIGNAL TRANSISTORS SILICON RECTIFIERS AND DIODES 5° TEXAS INSTRUMENTS I N C O R P O R A T E D 6000 LEMMON AVENUE DALLAS 9. TEXAS lele -Tech & ELECTRONIC INDUSTRIES June 1956 For product information, use inquiry card on pages 209 -210. 163
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TELE-TECH & ELECTRONIC INDUSTRIES S
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-1081 One of the Publications Owned
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Facts and Figures Round -Up June, 1
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PROGRESS either of two other 50 -oh
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testing components with Burroughs p
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REPRESENTATIVES Mr. Bertram D. Aaro
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m perex all -glass GERMANIUM DIODES
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Electronics Around the World Contin
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2=====l: As We Go To Press... saam
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As We Go To Press .. . (Continued)
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. FIXED Composition RESISTORS In al
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As We Go To Press .. . (Continued)
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As We Go To Press (Continued) Airbo
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Atl\Iri Get on the a,Pr , rrlr^ì .
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MIT Offers Summer Program on Modern
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CAMERA PICK -UP TUBES FROM WESTINGH
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32 For product information, use inq
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1 CHOOSE YOUR 20 SERVO These high p
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Type ML-6A. This unit is identical
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i ru nSitron SILICON RECTIFIERS MIL
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Get an on- the -job demonstration o
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BON OFFERS MO HYPES OF 1% Here's 1%
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.... f HEREIT1F! A NEW Plug -In Tri
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Etched cathode FP plate for 85°C s
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-4-- 11 ---)(-- 11" copv.,A 41za--
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EIM 170 AC X600 Klystron covers -24
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NEW Size 8 servo combination rivals
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IF YOU USE COILS like these toroids
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UNION U Miniature Relays with the t
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Sqr2Jiex Coaxial Cal lé IS GOING P
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Precision Frequency Source... ULTRA
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BOOKS I PmenU Pending YLON CO /L FO
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WESTINGHOUSE 2 -AMP GERMANIUM POWER
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çStiiijh1hlw PRODUCTS 1-3 / "Co lo
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kes Tarzian R E C T I F E R S Selen
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B.F.Goodrich For duplicating free s
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7Teecej 40m744- &we114 7le4va7atL I
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Design made easy with reliable RESI
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NOW...G-E SERIES -STRING SMALL TV P
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Type J dual control with line switc
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EXTENDED LIFE ELECTROLYTIC CAPACITO
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I RADARSCOPE Revealing important de
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Protecting and Packaging Electronic
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Design Of By J. E. WOODWARD, Sectio
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TI MM PULSE DELAY VT ULM PULSE WIDT
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Ì Fig. l: System installation plan
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o. -.4111111..._ '1.2 i OE BELOW FR
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Air -conditioned 28 ft. truck house
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i fGqfq 0/ 100 NOE TUBES5 NO.OF OF
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\- SECONDARY ELECTRONS GUN ENLARGED
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fin Air Cooling A By DR. M. MARK Fi
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. -. ' _ 220° 210° 200 190° 170
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I Vo AC MILLI- VOLTMETER The maximu
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Fig. 1: Linear and circular instrum
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CONTROL VOLTAGE SI BAND SWITCH Inge
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MIRROR MOTOR , SCREEN TARGET SPOTS
Page 114 and 115: CUES for BROADCASTERS Practical way
Page 116 and 117: , Designed with the future 0 ° S C
Page 118 and 119: REOy NGLER Beamed at the Greatest R
Page 120 and 121: New Technical Products BATTERY CLIP
Page 122 and 123: New Technical Products S -BAND LOAD
Page 124 and 125: New Tubes & Semiconductors SILICON
Page 126 and 127: New Avionic Products TELEMETRY RECE
Page 128 and 129: New Broadcast Equipment AMPLIFI ERS
Page 130 and 131: 1/2 actual size ji HUGHES TRANSISTO
Page 132 and 133: 'ono/ ELECTRONIC SOURCES Investigat
Page 134 and 135: International ELECTRONIC SOURCES Pr
Page 136 and 137: permeability is defined. Temperatur
Page 138 and 139: International ELECTRONIC SOURCES Th
Page 140 and 141: International ELECTRONIC SOURCES re
Page 142 and 143: nal ELECTRONIC SOUR ES the emission
Page 144 and 145: HERE ARE THE FACTS ABOUT TV MICROWA
Page 146 and 147: WASHINGTON eetem Latest Radio and C
Page 148 and 149: the portable recorder you specified
Page 150 and 151: ELECTRONIC Test Instruments 9 TUBE
Page 152 and 153: cnor MAN "XC" Plastic Film Dielectr
Page 154 and 155: IS RIGHT "NEXT DOOR" IN TERMS OF SE
Page 156 and 157: WIDE -BAND POWER OSCILLATOR 200 to
Page 158 and 159: NEW FROM ASCOP LOW LEVEL PW MULTICO
Page 160 and 161: ffi NEW Printed Circuit Precision R
Page 162 and 163: Amplifier Design (Continued from pa
Page 166 and 167: Albert Lazoni recently joined the D
Page 168 and 169: 1 1 DATA SOURCES Bil meti tsatäìr
Page 170 and 171: Be sure of dependable electrical pr
Page 172 and 173: DON'T DERATE DELIVERY DATES FOR CLO
Page 174 and 175: Here it is -the 1&/udc« Dat& on SI
Page 176 and 177: _ PROJECT: QUALITY CONTROL TARGET:
Page 178 and 179: Um OALOHM... ntiltiatune gut nw. Yo
Page 180 and 181: 1 A. Finned Magnetron (Continued fr
Page 182 and 183: ASDE Radar (Continued from page 87)
Page 184 and 185: TWICE THE SPEED WITH DOUBLE LEAD SC
Page 186 and 187: for GUIDED MISSILES Encapsulated mu
Page 188 and 189: Regulation in less than '/so th cyc
Page 190 and 191: Color TV G/L/LI /L RADIO ® VACUUM
Page 192 and 193: What are YOUR paper tube reO requir
Page 194 and 195: F A Optical Radar EIMAC Vacuum Swit
Page 196 and 197: STANDARD True Hermetic Sealing assu
Page 198 and 199: Direction Finders (Continued from p
Page 200 and 201: 41611 DETERMINATION fleWiO//?pi of
Page 202 and 203: Direction Finders (Continued from p
Page 204 and 205: Here's the fastest way to produce f
Page 206 and 207: i Mobile Unit (Continued from page
Page 208 and 209: PROBLEM #3 Design a miniaturized 40
Page 210 and 211: FREED OFFERS FOR IMMEDIATE DELIVERY
Page 212 and 213: PRODUCT INFORMATION? Use the cards
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It would take over 500 listings in
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Product Section & Code No. Cable, o
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Product Section & Code No. Meters,
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1956 ELECTRONIC INDUSTRIES DIRECTOR
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2- AMPLIFIERS, RF -IF Amplifiers, a
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General Riveters Inc Electro Mechan
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Coleman Instruments 318 Madison St
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Superex Electronics Corp 4 Radford
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Mattson Electronics Corp 1487 Linco
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Instrument Labs 315 W Walton PI Chi
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11- CAPACITORS, Fixed Capacitors, a
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Chicago Tool & Eng'g Co 8383 S Chic
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Mount Sopris Instrument Corp 1320 P
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Daystrom Pacific Corp 3030 Nebraska
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Hudson Associates 50 Drumm St San F
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Tech Labs Inc Bergen & Edsall Blvd
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20- CONTROL EQUIPMENT, COMMUNICATIO
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Gyro Electronics Oo 325 Canal St Ne
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Fretco Inc 406 N Craig St Pittsburg
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Austin O Div of Decalmakers 225 Fla
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26- HEADPHONES Headphones, crystal
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Rust Industrial Co 41 E 42 St New Y
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Acme Wire Co 1250 Dixwell Ave New H
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Eberline Instrument Div Reynolds El
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Sonex Inc 245 Sansom St Upper Darby
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Synchroscopes 43 Thermocouples 44 T
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Librascope Inc 808 Western Ave Glen
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Sensitive Research Instrument Corp
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New London Instrument Co 82 Union S
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44- MICROPHONE ACCESSORIES Micropho
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Continental Electronics 302 Oakland
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Dalmo Victor Co Div Textron America
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Electronic Specialty Co 5121 San Fe
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Morrow Radio Mfg Co 2794 Market St
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Valpey Crystal Corp Holliston Mass
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Olympic Radio & TV Inc 34-01 38 Ave
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Raytheon Mfg Co Equip Marketing Div
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59- RECORDING ACCESSORIES Discs, bl
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Delco Radio Div General Motors 700
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Sage Electronics Corp 302 N Goodman
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65 -SOUND REPRODUCING EQUIPMENT, MA
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Jensen Mfg Co 6601 S Laramie Ave Ch
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Racks equipment 30 Racks, film stor
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Aerovox Corp & Divisions 740 Bellev
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Electronic Products Co 111 E 3 St M
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Midwest Electric Products Mankato M
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Hertner Electric Co 12690 Elmwood A
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Linde Air Products Co Div Union Car
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Guardian Electric Mfg Co 1621 W Wal
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Cranephone -Femco Inc. Crest Lab -M
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BRAND and TRADE NAME INDEX Polyken-
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CONSULTING ENGINEERS ELECTRONIC IND
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DISTRIBUTORS SERVING the ELECTRONIC
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REPRESENTATIVES ( "REPS ") ELECTRON
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REPRESENTATIVES ( "REPS'') DAN GREE
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REPRESENTATIVES ( "REPS") *Brauer &
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1 -7770 -5067 -4692 ALPHABETICAL LI
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-1677 -2291 -5127 -2626 ALPHABETICA
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-3130 Williams ALPHABETICAL LISTING
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-7765 1 -6174 ALPHABETICAL LISTING
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ALPHABETICAL LISTING of MANUFACTURE
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-1060 ALPHABETICAL LISTING of MANUF
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-2700 -8454 -C I-Leo ALPHABETICAL L
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000 Directory -Localizer Index Unit
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THE H. CROSS CO. ROLLING TECHNIQUE
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BIRNBACH can supply ... Single -Gun
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high 0 MICROWAVE SPECIFICATION IS I
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WE MAKE THE KIND OF TRANSFORMERS YO
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ä EXTENDED FREQUENCY RANGE with th
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plastic molding INJECTION 20 machin
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Nom! A LOW COST BRIGHT RHODIUM PLAT
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PRECISION ENGRAVING on Metal- Plast
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1199 IRE (LOT d IMAM pIEt ..e.. u..
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IMPEDANCE COMPARATOR FOR LABORATORY
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ADVERTISERS in JUNE Tele -Tech ACME
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ELECTRICAL WIRING DEVICES Designed
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RCA Field Enginee RCA Application E
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