David Griffin

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Charleston, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method for centering a clay plug on a potter's wheel
- Patent number 7,641,464
- Issue date Jan 5, 2010
- David Griffin
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
System and method for centering a clay plug on a potter's wheel
- Publication number 20080290540
- Publication date Nov 27, 2008
- David Griffin
- B28 - WORKING CEMENT, CLAY, OR STONE