Assignee
Inventors
- Eiichi Kokubo (22 patents)
- Kyoichi Osako (5 patents)
- Akira Hirata (38 patents)
- Mizuo Oshita (1 patents)
- Toshiaki Ito (39 patents)
- Kazuyuki Seki (10 patents)
- Eiichi Yoshikawa (10 patents)
- Osamu Miyazaki (76 patents)
US Patent 4699272 · Granted Oct 13, 1987