Assignee
Inventors
- Katsuyuki Miyasaka (4 patents)
- Masao Katayama (1 patents)
- Hisayoshi Yamamori (9 patents)
- Teruyoshi Uchida (4 patents)
- Junichi Tashita (2 patents)
- Akihiko Ooe (3 patents)
- Youjirou Watanabe (2 patents)
US Patent 4813423 · Granted Mar 21, 1989