Assignee
Inventors
- Yasuyuki Nakajima (11 patents)
- Takahiro Makabe (5 patents)
- Kazunari Nakayama (3 patents)
- Tatsuo Numata (25 patents)
- Kiminori Hirata (12 patents)
- Masaki Kudo (8 patents)
- Yoshinori Ochiai (8 patents)
- Masayoshi Hirose (15 patents)
US Patent 4908379 · Granted Mar 13, 1990