TN

Takao Nagashima

TO Topre: 2 patents #5 of 35Top 15%
Overall (All Time): #2,332,152 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4851626 Key switch device — 1989-07-25
4584444 Keyboard switch — 1986-04-22