Assignee
Inventors
- Yoshiyuki Yamauchi (36 patents)
- Toshio Ohhara (4 patents)
- Shinji Ogawa (132 patents)
- Isao Kuroyanagi (17 patents)
- Haruhiko Otsuka (7 patents)
- Toshio Takahashi (207 patents)
- Osamu Kasebe (9 patents)
US Patent 4821531 · Granted Apr 18, 1989