Taro Ookawa

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Soundproof door
- Patent number 4,073,093
- Issue date Feb 14, 1978
- Yoshida Kogyo K.K.
- Taro Ookawa
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS