John M. Crump Jr.

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Jacksonville, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Vehicle fuel economy energy conservation indicating device and proc...
- Patent number 4,247,757
- Issue date Jan 27, 1981
- John M. Crump
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Vehicle energy conservation indicating device and process for use
- Patent number 4,186,296
- Issue date Jan 29, 1980
- John M. Crump
- G01 - MEASURING TESTING