Assignee
Inventors
- Haruo Ogura (8 patents)
- Kimio Furuhata (6 patents)
- Toshiaki Osawa (12 patents)
- Satoshi Toyoshima (3 patents)
- Yoshiyasu Shitori (27 patents)
- Masayoshi Ito (32 patents)
- Shoji Yoshimura (15 patents)
US Patent 4691012 · Granted Sep 1, 1987