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William H. Fischer

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  • Wingdale, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Inflatable plug
    • Patent number 4,518,015
    • Issue date May 21, 1985
    • The Presray Corporation
    • William H. Fischer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...