MS

Masanobu Sugiyama

SO Sony: 3 patents #10,744 of 25,231Top 45%
📍 Rifu, JP: #819 of 2,101 inventorsTop 40%
Overall (All Time): #1,617,268 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6421203 Magnetic tape cassette slider lock mechanism with tapered surfaces and coil spring bias 2002-07-16
5143317 Tape cassette with dual hub lock torsion springs 1992-09-01
5140488 Magnetic tape cassette Hiroshi Meguro 1992-08-18