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United States Patent and Trademark Office

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Int. Cl.: 6<br />

Prior U.S. Cls.: 2, 12, 13, 14, 23, 25 <strong>and</strong> 50<br />

Reg. No. 2,905,567<br />

<strong>United</strong> <strong>States</strong> <strong>Patent</strong> <strong>and</strong> <strong>Trademark</strong> <strong>Office</strong> Registered Nov. 30, 2004<br />

WEATHERFORD/LAMB, INC. (DELAWARE<br />

CORPORATION)<br />

515 POST OAK BLVD., SUITE 600<br />

HOUSTON, TX 77027<br />

FOR: METAL WELL SCREENS FOR USE IN<br />

SAND CONTROL IN OIL AND GAS WELLS, IN<br />

CLASS 6 (U.S. CLS. 2, 12, 13, 14, 23, 25 AND 50).<br />

TRADEMARK<br />

PRINCIPAL REGISTER<br />

SUPERFLO<br />

FIRST USE 6-0-1997; IN COMMERCE 2-1-1998.<br />

SER. NO. 76-462,714, FILED 10-29-2002.<br />

BARBARA GAYNOR, EXAMINING ATTORNEY

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