Friedhelm Geiger

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Spring Hose, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Network with redundancy properties, a branching unit for a user dev...
- Patent number 7,493,524
- Issue date Feb 17, 2009
- Siemens Aktiengesellschaft
- Holger Fehrmann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Network with redundancy properties, a branching unit for a user dev...
- Publication number 20070109958
- Publication date May 17, 2007
- Holger Fehrmann
- G05 - CONTROLLING REGULATING