TREA

Engelhardt; Rolf Dieter

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  • Waldfeucht/Obspringen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat exchanger
    • Patent number 4,556,104
    • Issue date Dec 3, 1985
    • Engelhardt; Rolf Dieter
    • Rolf D. Engelhardt
    • F24 - HEATING RANGES VENTILATING