Sadao Mabuchi

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Ageo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Speed change device for bicycle
- Patent number 4,838,122
- Issue date Jun 13, 1989
- Bridgestone Cycle Co., Ltd.
- Kikuzo Takamiya
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Method of manufacturing bicycle frame by die casting and bicycle fr...
- Patent number 4,145,068
- Issue date Mar 20, 1979
- Bridgestone Cycle Co. Ltd.
- Takeshi Toyomasu
- B22 - CASTING POWDER METALLURGY