Rolf D. Engelhardt

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D-5137 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