TREA

Henry G. Chasey

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  • Pittsburgh, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Articulated disc valve
    • Patent number 4,073,472
    • Issue date Feb 14, 1978
    • Koppers Company, Inc.
    • Henry G. Chasey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...