Claes J. A. Lindberg

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Sollentuna, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method and arrangement for supplying direct current to a telephone...
- Patent number 5,335,272
- Issue date Aug 2, 1994
- Telefonaktiebolaget L M Ericsson
- Bengt G. Lofmark
- H04 - ELECTRIC COMMUNICATION TECHNIQUE