Assignee
Inventors
- Hiroo Ukita (3 patents)
- Yoshitada Katagiri (12 patents)
- Renshi Sawada (9 patents)
- Yuuji Uenishi (1 patents)
- Yoshihiro Isomura (2 patents)
- Tomoyuki Toshima (6 patents)
- Keisuke Mise (1 patents)
US Patent 4860276 · Granted Aug 22, 1989