David M. Thomson

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Columbus, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for measuring the quantity of gas pumped by a compressor
- Patent number 4,783,990
- Issue date Nov 15, 1988
- Columbia Gas System Service Corporation
- Arthur C. Eberle
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for measuring the work performed by a gas compressor
- Patent number 4,676,095
- Issue date Jun 30, 1987
- Columbia Gas System Service Corp.
- Arthur C. Eberle
- G01 - MEASURING TESTING