Assignee
Inventors
- Yoshiki Kawasaki (9 patents)
- Yoshihiro Hioki (1 patents)
- Yuichi Ohno (11 patents)
- Kozaburo Ichida (6 patents)
- Susumu Yamaguchi (55 patents)
- Michitaka Sudo (1 patents)
- Bunichiro Chikazawa (3 patents)
US Patent 4872245 · Granted Oct 10, 1989