Assignee
Inventors
- Tomoyuki Ogura (15 patents)
- Yasuo Kawamura (28 patents)
- Masatoshi Baba (23 patents)
- Shigeru Ishii (17 patents)
- Kiminori Hirata (12 patents)
- Masaki Kudo (8 patents)
- Yoshinori Ochiai (8 patents)
- Masayoshi Hirose (15 patents)
US Patent 4837217 · Granted Jun 6, 1989