NA

Naohisa Aoki

NC Nippon Columbia Co.: 2 patents #5 of 66Top 8%
Overall (All Time): #2,358,563 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4488284 Moving-coil type pickup cartridge Akira Matuki 1984-12-11
4455639 Moving coil type pickup cartridge Akira Matui 1984-06-19