TREA

Friedrich Koger

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  • Neuenstein, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fan unit for use with duct systems
    • Patent number 4,798,518
    • Issue date Jan 17, 1989
    • Wilhelm Gebhardt GmbH
    • Vinzenz Holzberger
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Radial fan with backwardly curving blades
    • Patent number 4,526,506
    • Issue date Jul 2, 1985
    • Wilhelm Gebhardt GmbH
    • Friedrich Koger
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...