James D. Evans

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Digital altimeter computer
- Patent number 4,292,671
- Issue date Sep 29, 1981
- Hydac, Inc.
- James D. Evans
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus and method for monitoring sports contests
- Patent number 4,183,056
- Issue date Jan 8, 1980
- Kewp Electronic Systems, Inc.
- James D. Evans
- A63 - SPORTS GAMES AMUSEMENTS