Eiji Koyasu

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Ootawara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing hose having low permeability
- Patent number 5,137,672
- Issue date Aug 11, 1992
- Sakura Rubber Co., Ltd.
- Katsuyoshi Fujiu
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL