Assignee
Inventors
- Yasumasa Ishida (3 patents)
- Hiroyuki Kawamoto (78 patents)
- Motoi Wada (4 patents)
- Hisamitu Hatoh (1 patents)
- Yoshiteru Miyatake (2 patents)
- Sadao Mori (22 patents)
- Eiji Takahashi (219 patents)
US Patent 4881026 · Granted Nov 14, 1989