TREA

Franz Halder

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  • Ravensburg, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydro-electric turbo-machine
    • Patent number 4,464,580
    • Issue date Aug 7, 1984
    • Escher Wyss Limited
    • Helmut Miller
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...