Composite drill collar

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United States of America Patent

PATENT NO 4708203
SERIAL NO

06868409

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Abstract

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A drill collar is formed from a composite material to protect equipment during drilling operations as in oil and gas exploration.

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Patent Owner(s)

Patent OwnerAddress
PHILLIPS PETROLEUM COMPANYBARTLESVILLE OKLAHOMA UNITED STATES OF AMERICA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Walker, John H Bartlesville, OK 6 84

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