Assignee
Inventors
- Teizi Nagai (1 patents)
- Yasuo Tokushima (14 patents)
- Sadao Kubota (7 patents)
- Kenichirou Suzuki (13 patents)
- Yoshiyasu Fujitani (11 patents)
- Taisuke Yoshimoto (3 patents)
- Hideaki Muraki (23 patents)
- Hideo Tachi (2 patents)
US Patent 4957710 · Granted Sep 18, 1990