Assignee
Inventors
- Fumio Oi (14 patents)
- Haruyoshi Osaki (20 patents)
- Akihiro Furuta (24 patents)
- Yukikazu Uemura (4 patents)
- Takao Ninomiya (5 patents)
- Yasunori Uetani (82 patents)
- Makoto Hanabata (20 patents)
US Patent 4812551 · Granted Mar 14, 1989