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Carl H. Hafele

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  • 4052 Korschenbroich 1, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Device for influencing the reset value of a valve
    • Patent number 4,938,120
    • Issue date Jul 3, 1990
    • Sempell Aktiengesellschaft
    • Carl H. Hafele
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Servo-valve
    • Patent number 4,875,659
    • Issue date Oct 24, 1989
    • Sempell Aktiengesellschaft
    • Carl H. Hafele
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...