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Friedhelm Detzner

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  • Duisburg, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Spring element of elastic material
    • Patent number 6,669,183
    • Issue date Dec 30, 2003
    • Ringfeder VBG GmbH
    • Friedhelm Detzner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Kinetic energy absorbing element
    • Patent number 6,274,211
    • Issue date Aug 14, 2001
    • Ringfeder VGB GmbH
    • Friedhelm Detzner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Synthetic-resin compression spring
    • Patent number 4,660,811
    • Issue date Apr 28, 1987
    • Ringfeder G.m.b.H.
    • Dieter Muhlhahn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents