Assignee
Inventors
- Hisashi Kanda (3 patents)
- Susumu Nario (1 patents)
- Kazuhiko Morifuji (3 patents)
- Yuzo Kawada (3 patents)
- Takashi Sakai (96 patents)
- Takeshi Kawada (6 patents)
- Katsura Shimada (1 patents)
- Mitsuo Tsuneda (1 patents)
US Patent 4670953 · Granted Jun 9, 1987