Assignee
Inventors
- Kazuo Kigasawa (5 patents)
- Hiroaki Shimizu (1 patents)
- Toshihiro Hayashi (1 patents)
- Kazuo Watabe (1 patents)
- Akira Tanizaki (1 patents)
- Osamu Koyama (1 patents)
- Kikuo Wakisaka (2 patents)
- Yasuaki Ogawa (1 patents)
US Patent 4572832 · Granted Feb 25, 1986