John Thomas Stephens

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Couer d'alene, ID, US

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Patents Grantslast 30 patents

Information Patent Grant
Drill string chuck
- Patent number 6,719,303
- Issue date Apr 13, 2004
- Boart Longyear International Holdings, Inc.
- John Thomas Stephens
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Drill string chuck
- Publication number 20030080520
- Publication date May 1, 2003
- John Thomas Stephens
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR