Assignee
Inventors
- Tsunehiro Tsukagoshi (17 patents)
- Etsuro Nemoto (1 patents)
- Shinichi Yokozseki (1 patents)
- Sumio Hagiwara (5 patents)
- Toshikazu Yoshino (16 patents)
- Yasuyuki Arai (423 patents)
- Kazuyoshi Kobayashi (30 patents)
US Patent 4404315 · Granted Sep 13, 1983