Direct Drivehead, Inc.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
E21B EARTH OR ROCK DRILLING 393

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8684078 System and method for controlling fluid pumps to achieve desired levelsSep 08, 11Apr 01, 14[E21B]
8016027 Apparatus for driving rotating down hole pumpsJul 03, 08Sep 13, 11[E21B]
7044215 Apparatus and method for driving submerged pumpsMay 28, 04May 16, 06[E21B]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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