Assignee
Inventors
- Michio Yamashita (27 patents)
- Hiroshi Yoshida (675 patents)
- Toru Sasaki (153 patents)
- Hideo Abe (69 patents)
- Tsuneo Nagamine (2 patents)
- Norio Takashima (12 patents)
- Hideki Watanabe (177 patents)
- Shuji Watanabe (12 patents)
US Patent 4768363 · Granted Sep 6, 1988