Shigeru Nishizaki

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Suita, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing hollow aluminum extrudates for use in a high...
- Patent number 4,578,973
- Issue date Apr 1, 1986
- Showa Aluminum Corporation
- Hajime Ishimaru
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...