Leonard H. Davis

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New City, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Long term rapid color changing time indicator
- Patent number 7,139,226
- Issue date Nov 21, 2006
- Brady Worldwide, Inc.
- David J. Haas
- G04 - HOROLOGY

Patents Applicationslast 30 patents

Information Patent Application
Long term rapid color changing time indicator
- Publication number 20050185520
- Publication date Aug 25, 2005
- David J. Haas
- G04 - HOROLOGY