David P. Crockett

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Mission Viejo, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Rock bit
- Patent number 5,353,885
- Issue date Oct 11, 1994
- Smith International, Inc.
- Michael E. Hooper
- E21 - EARTH DRILLING MINING
Information Patent Grant
Precision roller bearing rock bits
- Patent number 4,793,719
- Issue date Dec 27, 1988
- Smith International, Inc.
- David P. Crockett
- E21 - EARTH DRILLING MINING