Masayuki Kawahara

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Can provided with easily openable closure and process for productio...
- Patent number 4,828,136
- Issue date May 9, 1989
- Toyo Seikan Kaisha, Ltd.
- Masayuki Kawahara
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...