Tomokazu Takeuchi

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Kamakura-ski, Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Porous thin foil and method for manufacturing the same
- Patent number 4,606,979
- Issue date Aug 19, 1986
- Tomokazu Takeuchi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...