Masanori Watanabe

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Patents Grantslast 30 patents

Information Patent Grant
Rotary damper having a clutch spring and viscous fluid
- Patent number 4,574,423
- Issue date Mar 11, 1986
- Fuji Seiki Kabushiki Kaisha
- Kenji Ito
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES