Assignee
Inventors
- Shuuichi Buma (86 patents)
- Takashi Yonekawa (21 patents)
- Toshio Onuma (37 patents)
- Katsuhiko Hattori (14 patents)
- Osamu Komazawa (14 patents)
- Sigetaka Isogai (1 patents)
- Hiroyuki Ikemoto (22 patents)
US Patent 4971353 · Granted Nov 20, 1990