John Vennard

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Los Gatos, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Non-reversible consumer replaceable watch battery
- Patent number 4,228,389
- Issue date Oct 14, 1980
- National Semiconductor Corporation
- John Vennard
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Asymmetric digital watch module
- Patent number 4,157,007
- Issue date Jun 5, 1979
- National Semiconductor Corporation
- John Vennard
- G04 - HOROLOGY