Assignee
Inventors
- Shigeki Shiraya (1 patents)
- Takesi Nakakobara (1 patents)
- Hitoshi Ishii (55 patents)
- Takashi Tomoda (5 patents)
- Kenji Shimoda (72 patents)
- Souichi Hayashi (3 patents)
- Zenichiro Kato (6 patents)
- Syuichi Ezaki (1 patents)
US Patent 4909198 · Granted Mar 20, 1990