Siemen AG

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Kelkheim, Taunus, DT

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Patents Grantslast 30 patents

Information Patent Grant
Method to produce a protective oxide on the surface of positive nic...
- Patent number 3,959,014
- Issue date May 25, 1976
- Varta Batterie Aktiengesellschaft
- Martin Bauer
- H01 - BASIC ELECTRIC ELEMENTS