Assignee
Inventors
- Akiyoshi Hamada (31 patents)
- Mitsutoshi Yagoto (21 patents)
- Yutaka Watanabe (166 patents)
- Shuji Mochizuki (9 patents)
- Masayuki Mino (10 patents)
- Yutaka Tanaka (169 patents)
- Kyoji Tachikawa (21 patents)
US Patent 4958169 · Granted Sep 18, 1990