Assignee
Inventors
- Eiji Nakasaki (16 patents)
- Hisashi Shirashoji (5 patents)
- Katsuyuki Hoshikawa (3 patents)
- Takao Kamijo (6 patents)
- Kazushige Ikeda (11 patents)
- Yasuhiro Inoue (37 patents)
- Takeo Kato (27 patents)
US Patent 4640329 · Granted Feb 3, 1987