Yoshikazu Hayashi

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Toyokawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composite and durable forming model with permeability
- Patent number 4,531,705
- Issue date Jul 30, 1985
- Sinto Kogio, Ltd.
- Takeo Nakagawa
- B28 - WORKING CEMENT, CLAY, OR STONE