Christopher A. Hyams

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El Cajon, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Detectable warning-dots demarkation for pedestrian safety
- Patent number 7,249,911
- Issue date Jul 31, 2007
- Christopher A. Hyams
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
Detectable warning-dots demarkation for pedestrian safety
- Publication number 20060039752
- Publication date Feb 23, 2006
- Christopher A. Hyams
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES