Hans Baumgartner

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Niederrohrdorf, CH

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Patents Grantslast 30 patents

Information Patent Grant
Waterproof watch and method for making
- Patent number 4,293,942
- Issue date Oct 6, 1981
- BBC Brown, Boveri & Company, Limited
- Hans Baumgartner
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...