Herman E. Sheffield

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Programmable control circuit for controlling the on-off operation o...
- Patent number 4,595,978
- Issue date Jun 17, 1986
- Automatic Power, Inc.
- Herman E. Sheffield
- G05 - CONTROLLING REGULATING
Information Patent Grant
Solar energy device and method
- Patent number 4,218,139
- Issue date Aug 19, 1980
- Herman E. Sheffield
- G01 - MEASURING TESTING
Information Patent Grant
McCulloh receiver
- Patent number 3,982,242
- Issue date Sep 21, 1976
- Honeywell Inc.
- Herman E. Sheffield
- G08 - SIGNALLING