FK

Fumio Kohyama

CC Citizen Watch Co.: 1 patents #668 of 1,225Top 55%
Overall (All Time): #4,086,845 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4259607 Quartz crystal vibrator using Ni-Ag or Cr-Ni-Ag electrode layers Kazuo Noguchi, Makoto Wakasugi 1981-03-31