Assignee
Inventors
- Yasuhiko Sasamoto (6 patents)
- Youichi Kammuri (4 patents)
- Kiyohiko Sawa (2 patents)
- Masami Araki (1 patents)
- Shizuya Morimoto (1 patents)
- Fumio Mitsui (1 patents)
- Nobuyoshi Miyazaki (1 patents)
US Patent 4816278 · Granted Mar 28, 1989