Assignee
Inventors
- Kiyoshi Funaki (3 patents)
- Kenichi Mochizuki (19 patents)
- Jiro Ikeda (23 patents)
- Masatsugu Murao (5 patents)
- Mitsuaki Murao (1 patents)
- Yoshinori Murao (2 patents)
- Kazuhiko Murao (3 patents)
US Patent 4867528 · Granted Sep 19, 1989