Assignee
Inventors
- Sadakazu Masuda (11 patents)
- Fumio Fujita (21 patents)
- Masamoto Kamata (4 patents)
- Masahiko Yoshini (1 patents)
- Takashi Ariizumi (4 patents)
- Yuji Okami (2 patents)
- Yoshikazu Takada (16 patents)
- Junichi Inagaki (62 patents)
US Patent 4986341 · Granted Jan 22, 1991