Assignee
Inventors
- Kenji Sugino (6 patents)
- Yoshihiro Sugino (4 patents)
- Mikio Tatsuguchi (1 patents)
- Kensaku Eda (2 patents)
- Yoichi Kasai, deceased (3 patents)
- Tsuyoshi Nishisaka (1 patents)
- Motoki Yonekawa (4 patents)
US Patent 4560373 · Granted Dec 24, 1985