TU

Toshiro Umeda

NI Nikon: 1 patents #1,647 of 2,493Top 70%
Overall (All Time): #3,851,972 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5119235 Focusing screen and method of manufacturing same Hiroyuki Sugimura, Shinichi Tsukada, Noboru Yoneya, Akira Adachi, Asaji Masuko 1992-06-02