LeTourneau Technologies Drilling Systems, Inc.
Patent Applications and Registrations
Patent applications and USPTO patent grants for LeTourneau Technologies Drilling Systems, Inc..The latest application filed is for "top drive drilling system and other applications using a low speed direct drive ac motor".
- LeTourneau Technologies Drilling Systems, Inc. - Houston TX
Trademarks
| Patent | Date |
|---|---|
| Top drive drilling system and other applications using a low speed direct drive AC motor Grant 8,047,306 - Williams , et al. November 1, 2 | 2011-11-01 |
| Top drive drilling system and other applications using a low speed direct drive AC motor App 20090183923 - Williams; Kevin R. ; et al. | 2009-07-23 |
| Adaptive Gate Drive For Switching Devices Of Inverter App 20080007318 - PACE; Gary ; et al. | 2008-01-10 |
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