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Manway cover system
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Patent number 6,390,119
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Issue date May 21, 2002
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Provacon, Inc.
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Kevin Crochet
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve and actuator in combination
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Patent number 6,227,223
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Issue date May 8, 2001
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Provacon, Inc.
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Kevin Crochet
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Process instrument isolation valve
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Patent number 6,053,200
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Issue date Apr 25, 2000
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Provacon, Inc.
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Kevin Crochet
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve and actuator in combination
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Patent number 5,924,672
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Issue date Jul 20, 1999
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Provacon, Inc.
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Kevin Crochet
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve/actuator combination
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Patent number 5,673,897
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Issue date Oct 7, 1997
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Provacon, Inc.
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Kevin W. Crochet
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...