Charles R. Lawrence

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Broken Arrow, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Monitoring and regulating device for a fluid such as engine oil
- Patent number 5,493,086
- Issue date Feb 20, 1996
- Murphy Management Inc.
- Frank W. Murphy
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Hall effect signalling gauge
- Patent number 4,975,687
- Issue date Dec 4, 1990
- Frank W. Murphy Mfr.
- Frank W. Murphy
- G01 - MEASURING TESTING