TO

Takeo Oba

SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #3,900,892 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4918558 Magnetic tape cassette having reel locks controlled by an optical tape end detecting element Tadao Igarashi, Takashi Ota 1990-04-17