IB

Ikuo Betsui

SI Seiko Instruments: 1 patents #836 of 1,437Top 60%
Overall (All Time): #3,894,093 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4893889 Optical attenuator Toyokazu Iwakiri, Akira Sugiyama, Yoshio Kashima, Nobuo Suzuki 1990-01-16