Akira Koyano

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electric-powered shutter apparatus for a building opening
- Patent number 5,799,716
- Issue date Sep 1, 1998
- Sanwa Shutter Corporation
- Kenji Yamaguchi
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS