Howard C. Davis

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Columbus, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Gravity engine
- Patent number 4,100,743
- Issue date Jul 18, 1978
- The Northwestern Mutual Life Insurance Company
- Harold E. Trumbull
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Color reproduction method
- Patent number 3,999,987
- Issue date Dec 28, 1976
- Xerox Corporation
- Howard C. Davis
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY