Assignee
Inventors
- Masayuki Ainoya (20 patents)
- Takeyuki Ishihara (2 patents)
- Tesuo Kanno (1 patents)
- Takahiro Kikuchi (30 patents)
- Seiichi Mori (90 patents)
- Shogo Nobumori (7 patents)
- Junji Shirakawa (33 patents)
US Patent 4929982 · Granted May 29, 1990