Assignee
Inventors
- Masahiro Ono (97 patents)
- Akio Takahashi (174 patents)
- Katuo Sugawara (18 patents)
- Ritsuro Tada (6 patents)
- Akira Nagai (130 patents)
- Motoyo Wajima (34 patents)
- Toshikazu Narahara (34 patents)
US Patent 4738900 · Granted Apr 19, 1988