Bernd Bittmann

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Wermelskirchen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Burner, in particular atmospheric pre-mix gas burner, and cooling r...
- Patent number 4,915,620
- Issue date Apr 10, 1990
- Joh. Vaillant GmbH & Co.
- Bernd Bittmann
- F24 - HEATING RANGES VENTILATING