Ralf Ettwein

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Winterthur, CH

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Patents Grantslast 30 patents

Information Patent Grant
Heat exchanger for a heating system with integrated fuel cells for...
- Patent number 7,641,995
- Issue date Jan 5, 2010
- Sulzer Hexis AG
- Ralf Ettwein
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
Heat exchanger for a heating system with integrated fuel cells for...
- Publication number 20050118474
- Publication date Jun 2, 2005
- Sulzer Hexis AG
- Ralf Ettwein
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...