Assignee
Inventors
- Yoshihisa Sato (69 patents)
- Yugi Hirabayashi (1 patents)
- Katsuhiro Ina (11 patents)
- Katsunori Ito (31 patents)
- Susumu Akiyama (42 patents)
- Takao Saito (118 patents)
- Tetsuo Tanigawa (4 patents)
US Patent 4835671 · Granted May 30, 1989