Charles Berthoud

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Couvet, CH

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Patents Grantslast 30 patents

Information Patent Grant
Cycle crank gear assembly including replaceable cartridge
- Patent number 4,252,384
- Issue date Feb 24, 1981
- Edouard Dubied & Cie SA
- Michel Duvoisin
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS