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Gerhard Ridder

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  • Witten-Bommern, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ship's drive with trolling device
    • Patent number 5,171,170
    • Issue date Dec 15, 1992
    • Mannesmann Aktiengesellschaft
    • Gerhard Ridder
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Hydraulic control with delay
    • Patent number 4,179,887
    • Issue date Dec 25, 1979
    • Mannesmann Aktiengesellschaft
    • Gerhard Ridder
    • B60 - VEHICLES IN GENERAL