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Control assembly
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Patent number 4,624,415
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Issue date Nov 25, 1986
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American Standard Inc.
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Edward G. Hofstetter
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E03 - WATER SUPPLY SEWERAGE
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Valve diaphragm
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Patent number 4,421,294
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Issue date Dec 20, 1983
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American Standard, Inc.
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Richard G. Parkison
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Flow control technique
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Patent number 4,364,523
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Issue date Dec 21, 1982
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American Standard Inc.
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Richard G. Parkison
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G05 - CONTROLLING REGULATING
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