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Joseph M. McGinnis
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West Chester, PA, US
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last 30 patents
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Patent Grant
Gravity-operated gas shut-off valve
Patent number
5,704,391
Issue date
Jan 6, 1998
Umac Incorporated
John B. McGowan
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Patent Grant
Balanced-flow gas safety valve
Patent number
5,551,476
Issue date
Sep 3, 1996
Umac Incorporated
Joseph M. McGinnis
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...