Jack W. Nelson

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Milwaukee, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic breakout wrench with floating gripping dies
- Patent number 6,938,519
- Issue date Sep 6, 2005
- Harnischfeger Technologies, Inc.
- James W. Boyd
- E21 - EARTH DRILLING MINING
Information Patent Grant
Blast hole drill with improved deck wrench
- Patent number 6,298,926
- Issue date Oct 9, 2001
- Harnischfeger Technologies, Inc.
- Marcia H. Dalkert
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Blasthole drill with automatic breakout wrench with floating grippi...
- Publication number 20050000324
- Publication date Jan 6, 2005
- James W. Boyd
- E21 - EARTH DRILLING MINING