Driltech Inc.
4Patents
0Active
4Granted
23Portfolio score
Filing activity: Sep 2, 1975 → Dec 4, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3980143A | Holding wrench for drill strings | Fixed Constructions | 92 | Expired |
| US5996444A | Apparatus for unscrewing drill pipe sections | Fixed Constructions | 24 | Expired |
| US5944122A | Methods and apparatus for controlling an air compressor in a drill string flushing system | Fixed Constructions | 9 | Expired |
| USD244190S | Well drilling vehicle | General | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.