Harrington; David Michel
Patent Applications and Registrations
Patent applications and USPTO patent grants for Harrington; David Michel.The latest application filed is for "hybrid rotary cone drill bit".
- Harrington; David Michel - Dallas TX
| Patent | Date |
|---|---|
| Method for drilling out a plug using a hybrid rotary cone drill bit Grant 10,538,970 - Nobile , et al. Ja | 2020-01-21 |
| Hybrid Rotary Cone Drill Bit App 20190063161 - NOBILE; KYLE ; et al. | 2019-02-28 |
| Wear resistant plates on a leading transitional surface of the leg for a rotary cone drill bit Grant 9,488,007 - Harrington , et al. November 8, 2 | 2016-11-08 |
| Hybrid rotary cone drill bit Grant 9,376,866 - Nobile , et al. June 28, 2 | 2016-06-28 |
| Method For Drilling Out A Plug Using A Hybrid Rotary Cone Drill Bit App 20160153241 - Nobile; Kyle ; et al. | 2016-06-02 |
| Composite Diaphragm For Roller Cone Pressure Compensation System App 20160076307 - Harrington; David Michel ; et al. | 2016-03-17 |
| Roller cone drill bit with cuttings evacuator Grant 9,260,922 - Kongamnach , et al. February 16, 2 | 2016-02-16 |
| Industrial Tools With Thermoset Coating App 20150299514 - Chiu; Cheng-Wei ; et al. | 2015-10-22 |
| Drill Bit For Horizontal Directional Drilling App 20150226007 - Harrington; David Michel ; et al. | 2015-08-13 |
| Hybrid Rotary Cone Drill Bit App 20150053422 - Nobile; Kyle ; et al. | 2015-02-26 |
| Wear Resistant Plates On A Leading Transitional Surface Of The Leg For A Rotary Cone Drill Bit App 20140299384 - Harrington; David Michel ; et al. | 2014-10-09 |
| Roller Cone Drill Bit With Cuttings Evacuator App 20130256038 - Kongamnach; Amnach ; et al. | 2013-10-03 |
| Rock bit having a seal gland with a conical sealing surface Grant 8,403,079 - Gallifet , et al. March 26, 2 | 2013-03-26 |
| Rock bit having a seal gland with a conical sealing surface Grant 8,393,418 - Gallifet , et al. March 12, 2 | 2013-03-12 |
| Rock Bit Having A Seal Gland With A Conical Sealing Surface App 20100193251 - Gallifet; Thomas ; et al. | 2010-08-05 |
| Rock Bit Having A Seal Gland With A Conical Sealing Surface App 20100194057 - Gallifet; Thomas ; et al. | 2010-08-05 |
| Rock Bit Having A Seal Gland With A Conical Sealing Surface App 20090045585 - Gallifet; Thomas ; et al. | 2009-02-19 |
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