Assignee
Inventors
- Masaru Shibata (13 patents)
- Masayuki Onishi (42 patents)
- Hitoshi Ohsugi (2 patents)
- Shigeru Ogura (8 patents)
- Masaru Washio (7 patents)
- Hideo Kuguminato (14 patents)
- Yoshiaki Hara (29 patents)
US Patent 4955126 · Granted Sep 11, 1990