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Peter Frieden

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  • Cologne, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Oil supply device for a rotary machine
    • Patent number 5,044,895
    • Issue date Sep 3, 1991
    • Leybold Aktiengesellschaft
    • Peter Frieden
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump having an evacuated gear chamber
    • Patent number 4,632,650
    • Issue date Dec 30, 1986
    • Leybold-Heraeus GmbH
    • Peter Frieden
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-sealed vacuum pump
    • Patent number 4,525,129
    • Issue date Jun 25, 1985
    • Leybold-Heraeus GmbH
    • Hanns-Peter Berges
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump and method of operating the same
    • Patent number 4,483,667
    • Issue date Nov 20, 1984
    • Leybold-Heraeus GmbH
    • Hanns-Peter Berges
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...