Shingo Nishimura

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Toyota, JP

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Patents Grantslast 30 patents

Information Patent Grant
Piercing die whose punch has different amounts of chamfer at differ...
- Patent number 5,235,881
- Issue date Aug 17, 1993
- Toyota Jidosha Kabushiki Kaisha
- Kazuhiro Sano
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...