Mark Clench

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Diamond drag bit
- Patent number 5,213,171
- Issue date May 25, 1993
- Smith International, Inc.
- Mark Clench
- E21 - EARTH DRILLING MINING
Information Patent Grant
Matrix diamond drag bit with PCD cylindrical cutters
- Patent number 5,056,382
- Issue date Oct 15, 1991
- Smith International, Inc.
- Mark Clench
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR