James M. Shamburger Jr.

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Spring Harris County, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Rotary cone drill bit with truncated rolling cone cutters and dome...
- Patent number 5,695,019
- Issue date Dec 9, 1997
- Dresser Industries, Inc.
- James M. Shamburger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Roller cone rock bit having improved cutter gauge face surface comp...
- Patent number 5,636,700
- Issue date Jun 10, 1997
- Dresser Industries, Inc.
- James M. Shamburger
- E21 - EARTH DRILLING MINING