ELECTRONIC DESIGN FOR INDUSTRY, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
E21B EARTH OR ROCK DRILLING 294

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7350581 Vapor recovery systemMay 11, 05Apr 01, 08[E21B]
RE34111 Apparatus for operating a gas and oil producing wellFeb 04, 92Oct 27, 92[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7108116 Clutch actuatorExpiredMay 05, 04Sep 19, 06[F16D]
4526228 Apparatus for operating a gas and oil producing wellExpiredJan 18, 83Jul 02, 85[E21B]

Top Inventors for This Owner

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