Assignee
Inventors
- Seikichi Tanno (21 patents)
- Noriaki Taketani (11 patents)
- Shuji Eguchi (44 patents)
- Hideki Asano (53 patents)
- Yukio Shimazaki (4 patents)
- Yuuetsu Takuma (4 patents)
- Masahiko Ibamoto (59 patents)
- Junji Mukai (7 patents)
US Patent 4946242 · Granted Aug 7, 1990