MK

Masahiro Kionuma

PE Pentax: 1 patents #515 of 761Top 70%
Overall (All Time): #3,893,871 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4893140 Single-lens reflex camera with built-in flash Masato Yamamoto, Susumu Koshino, Toshimasa Yamanaka, Koji Sato, Akihiro Arai 1990-01-09