Hiromune Chuma

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Oyamashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing aluminum drums having highly smooth surface
- Patent number 4,805,435
- Issue date Feb 21, 1989
- Showa Aluminum Kabushiki Kaisha
- Minobu Sukimoto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...