Assignee
Inventors
- Junji Yoshizawa (9 patents)
- Yoshimi Tsuchiya (12 patents)
- Yukio Hirayama (4 patents)
- Kaoru Shimada (23 patents)
- Nobuyuki Mino (1 patents)
- Kyoko Nakamichi (3 patents)
- Ikuo Matsumoto (9 patents)
US Patent 4668799 · Granted May 26, 1987