Dirk Zimmermann

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Berlin, DE

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Patents Grantslast 30 patents

Information Patent Grant
Circuit assembly for operating a luminous signal
- Patent number 7,026,799
- Issue date Apr 11, 2006
- Siemens Aktiengellschaft
- Norbert Pöpplow
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
Light signal
- Publication number 20050122719
- Publication date Jun 9, 2005
- Siemens AG
- Jorg Liebscher
- B61 - RAILWAYS
Information Patent Application
Circuit assembly for operating a luminous signal
- Publication number 20050029961
- Publication date Feb 10, 2005
- Norbert Popplow
- B61 - RAILWAYS