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Manfred Zelder

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  • Bonn, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cutting tool pertaining to a centrifugal pump
    • Patent number 7,520,454
    • Issue date Apr 21, 2009
    • WILO AG
    • Manfred Zelder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Impeller containing a pair of blades wherein the leading edge of on...
    • Patent number 5,692,880
    • Issue date Dec 2, 1997
    • Wilo GmbH
    • Manfred Zelder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Unchokable centrifugal pump
    • Patent number 5,516,261
    • Issue date May 14, 1996
    • Wilo GmbH
    • Manfred Zelder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Submersible motor-driven pump
    • Patent number 5,480,290
    • Issue date Jan 2, 1996
    • Wilo GmbH
    • Manfred Zelder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Cable-attaching device for a pump
    • Patent number 5,362,258
    • Issue date Nov 8, 1994
    • Wilo GmbH
    • Kurt-Werner Arnswald
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    Cutting tool pertaining to a centrifugal pump
    • Publication number 20070164136
    • Publication date Jul 19, 2007
    • Manfred Zelder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...