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Herman E. Knappe

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  • Cedar Rapids, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Actuator mechanism for double-block and vent valve
    • Patent number 4,483,360
    • Issue date Nov 20, 1984
    • Cherry-Burrell Corporation
    • Herman E. Knappe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Double block and vent valve
    • Patent number 4,373,545
    • Issue date Feb 15, 1983
    • Cherry-Burrell Corporation
    • Herman E. Knappe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...