Masanori Kasai

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Akishima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Slat opening/closing drive mechanism in shutter equipment
- Patent number 4,838,331
- Issue date Jun 13, 1989
- Bunka Shutter Co., Ltd.
- Masanori Kasai
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS