Assignee
Inventors
- Takeo Fukatsu (15 patents)
- Kazuyuki Gotoh (4 patents)
- Masaru Takeuchi (94 patents)
- Kenichiro Wakizaka (1 patents)
- Kazuhiko Honma (2 patents)
- Shoichi Nakano (22 patents)
- Yukinori Kuwano (29 patents)
US Patent 4914457 · Granted Apr 3, 1990