Assignee
Inventors
- Hiroyoshi Nozaki (9 patents)
- Zenichi Aida (1 patents)
- Hirofumi Hara (24 patents)
- Toshihiko Satake (70 patents)
- Hiroshi Mitsuyoshi (6 patents)
- Masayasu Arakawa (11 patents)
- Koji Hatanaka (46 patents)
US Patent 4822647 · Granted Apr 18, 1989