TREA

Karl Prenzel

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  • Nuremburg, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electro-hydraulic regulating valve system
    • Patent number 4,133,511
    • Issue date Jan 9, 1979
    • Frieseke & Hoepfner GmbH
    • Georg Hartmann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...