Assignee
Inventors
- Shinji Kojima (72 patents)
- Toshitane Matsukawa (9 patents)
- Hisakazu Mizota (7 patents)
- SUSUMU YUHARA (1 patents)
- Yoshio Yoshimoto (6 patents)
- Toshio Fujimura (20 patents)
- Kunihiro Ito (9 patents)
US Patent 4930207 · Granted Jun 5, 1990