John Trimble

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Malvern, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for plugging and cutting a gas line or the lik...
- Patent number 4,295,494
- Issue date Oct 20, 1981
- UMAC, Inc.
- John B. McGowan
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...