Wilfried Schaffrath

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Dorfhain, DE

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Patents Grantslast 30 patents

Information Patent Grant
Glass-metal connection, in particular for a vacuum-tube solar colle...
- Patent number 8,097,318
- Issue date Jan 17, 2012
- NARVA Lichtquellen GmbH + Co. KG
- Gerhard Mientkewitz
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Glass-Metal Connection, in Particular for a Vacuum-Tube Solar Colle...
- Publication number 20090117299
- Publication date May 7, 2009
- Gerhard Mientkewitz
- F24 - HEATING RANGES VENTILATING