Singo Emi

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pipe formed by bending rolls
- Patent number 6,467,510
- Issue date Oct 22, 2002
- Kawasaki Steel Corporation
- Michio Yamashita
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...