Rolf Heilmann

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Giessen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for production of a multi-layer carbon brush
- Patent number 7,308,759
- Issue date Dec 18, 2007
- Schunk Kohlenstofftechnik GmbH
- Rainer Sperling
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Method for production of a multi-layer carbon brush
- Publication number 20050223538
- Publication date Oct 13, 2005
- Rainer Sperling
- H01 - BASIC ELECTRIC ELEMENTS