Assignee
Inventors
- Shinichi Hirama (1 patents)
- Toshio Nishiyama (8 patents)
- Youichi Ohta (2 patents)
- Makoto Uzuka (2 patents)
- Kenichi Tomita (12 patents)
- Keisuke Nakajima (1 patents)
- Kazumaro Furuse (5 patents)
US Patent 4713397 · Granted Dec 15, 1987