Jitsuho Takatsuka

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Device for confirming whether a lock is locked or unlocked
- Patent number 4,936,896
- Issue date Jun 26, 1990
- Hasegawa; Hiroshi
- Jitsuho Takatsuka
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Device for confirming whether a lock is locked or unlocked
- Patent number 4,908,605
- Issue date Mar 13, 1990
- Hasegawa; Hiroshi
- Jitsuho Takatsuka
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES