Kyohei Marukawa

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Traffic sign with vertically movable light source
- Patent number 6,206,557
- Issue date Mar 27, 2001
- Kinugawa Rubber Ind. Co., Ltd.
- Noritoshi Sakuma
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES