TU

Tetsuo Usui

SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #3,728,201 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5682372 Method and apparatus for playing back multilayer disk Akio Yamakawa, Masamichi Utsumi 1997-10-28