Assignee
Inventors
- Masakatsu Sakamoto (15 patents)
- Shuhei Ohta (4 patents)
- Shiro Iwakura (7 patents)
- Kaoru Yamazaki (49 patents)
- Yoichi Yaguchi (14 patents)
- Hiroaki Toshima (22 patents)
- Tsugio Sato (4 patents)
US Patent 4772513 · Granted Sep 20, 1988