Assignee
Inventors
- Shinichi Nakagawa (98 patents)
- Tsuneo Nakagawa (13 patents)
- Sadaatsu Yamaguchi (4 patents)
- Kiyohiko Ihara (12 patents)
- Toshihiko Amano (9 patents)
- Mitsugu Omori (4 patents)
- Kohzoh Asano (3 patents)
US Patent 4499249 · Granted Feb 12, 1985