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Jitsuho Takatsuka — 2 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%

Overall (All Time): #2,322,386 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4936896	Device for confirming whether a lock is locked or unlocked	—	1990-06-26
4908605	Device for confirming whether a lock is locked or unlocked	—	1990-03-13