loadpatents
Patent applications and USPTO patent grants for Clegg; John M..The latest application filed is for "rotary drill bits".
Patent | Date |
---|---|
Rotary drill bits Grant 6,089,336 - Nexton , et al. July 18, 2 | 2000-07-18 |
Steerable rotary drilling systems Grant 6,089,332 - Barr , et al. July 18, 2 | 2000-07-18 |
Rotary drill bits Grant 5,819,860 - Newton , et al. October 13, 1 | 1998-10-13 |
Steerable rotary drilling systems and method of operating such systems Grant 5,803,185 - Barr , et al. September 8, 1 | 1998-09-08 |
Method of operating a steerable rotary drilling system Grant 5,685,379 - Barr , et al. November 11, 1 | 1997-11-11 |
Rotary drill bits Grant 5,671,818 - Newton , et al. September 30, 1 | 1997-09-30 |
Rotary drill bits Grant 5,244,039 - Newton, Jr. , et al. September 14, 1 | 1993-09-14 |
Rotary drill bits Grant 5,186,268 - Clegg February 16, 1 | 1993-02-16 |
Rotary drill bits Grant 5,163,524 - Newton, Jr. , et al. November 17, 1 | 1992-11-17 |
Notary drill bits Grant 5,119,892 - Clegg , et al. June 9, 1 | 1992-06-09 |
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