Assignee
DRILTECH INC
4 granted patents·179 citations·filing 1975–1997
Technology mixE21B3
Top patents by PatentIndex Score
4 records- 0189US3980143AHolding wrench for drill stringsDRILTECH INC·Filed 1975·Granted Sep 14, 1976·105 cites·5 claims
- 0258USD244190SWell drilling vehicleDRILTECH INC·Filed 1975·Granted May 3, 1977·7 cites·1 claims
- 0356US5996444AApparatus for unscrewing drill pipe sectionsDRILTECH INC·Filed 1997·Granted Dec 7, 1999·41 cites·12 claims
- 0442US5944122AMethods and apparatus for controlling an air compressor in a drill string flushing systemDRILTECH INC·Filed 1997·Granted Aug 31, 1999·26 cites·5 claims
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