Assignee
Inventors
- Osamu Tsutsui (21 patents)
- Hideki Kawaguchi (7 patents)
- Keiji Hayashi (71 patents)
- Masahiro Kayano (2 patents)
- Shingo Tanaka (85 patents)
- Hiroshi Kobayashi (747 patents)
- Hisashi Nakamura (73 patents)
- Atsuo Makita (16 patents)
US Patent 4819587 · Granted Apr 11, 1989