John Wittenberg

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Owen Sound, CA

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Patents Grantslast 30 patents

Information Patent Grant
Scaling assembly
- Patent number 7,207,633
- Issue date Apr 24, 2007
- Astec Industries, Inc.
- John Wittenberg
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Scaling assembly with pivotally mounted pick component
- Publication number 20070145811
- Publication date Jun 28, 2007
- John Wittenberg
- E21 - EARTH DRILLING MINING
Information Patent Application
Scaling assembly
- Publication number 20050077777
- Publication date Apr 14, 2005
- Astec Industries, Inc.
- John Wittenberg
- E21 - EARTH DRILLING MINING