Johan C. De Grijs

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Solar collector
- Patent number 4,356,811
- Issue date Nov 2, 1982
- U.S. Philips Corporation
- Johan C. de Grijs
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Solar collector comprising an evaporation/condensation system
- Patent number 4,270,520
- Issue date Jun 2, 1981
- U.S. Philips Corporation
- Faramarz Mahdjuri
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Solar collector
- Patent number 4,194,493
- Issue date Mar 25, 1980
- U.S. Philips Corporation
- Johan C. De Grijs
- F24 - HEATING RANGES VENTILATING