John J. Pierce

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Provo, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Indexing drill bit
- Patent number 10,731,420
- Issue date Aug 4, 2020
- Schlumberger Technology Corporation
- Scott S. Dahlgren
- E21 - EARTH DRILLING MINING
Information Patent Grant
Axially stable retention mechanism for picks and cutting elements
- Patent number 9,890,636
- Issue date Feb 13, 2018
- Schlumberger Technology Corporation
- David R. Hall
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
INDEXING DRILL BIT
- Publication number 20180087323
- Publication date Mar 29, 2018
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Scott S. Dahlgren
- E21 - EARTH DRILLING MINING
Information Patent Application
AXIALLY STABLE RETENTION MECHANISM FOR PICKS AND CUTTING ELEMENTS
- Publication number 20140339882
- Publication date Nov 20, 2014
- SCHLUMBERGER TECHNOLOGY CORPORATION
- David R. Hall
- B28 - WORKING CEMENT, CLAY, OR STONE