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Valve plug
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Patent number 5,881,996
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Issue date Mar 16, 1999
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Stockham Valves & Fittings, Inc.
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Richard D. Walsh
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve actuating mechanism
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Patent number 5,374,030
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Issue date Dec 20, 1994
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Stockham Valves & Fittings
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James Guest
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve lock assembly
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Patent number 5,058,622
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Issue date Oct 22, 1991
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Stockham Valves & Fittings, Inc.
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Gordon W. Chitty
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...