Assignee
Inventors
- Iwao Maekawa (21 patents)
- Eiji Omori (1 patents)
- Isao Uchigasaki (9 patents)
- Hideyuki Tobita (9 patents)
- Naoki Yokoyama (74 patents)
- Seikichi Tanno (21 patents)
- Fumio Nakano (28 patents)
- Ren Ito (4 patents)
US Patent 4490496 · Granted Dec 25, 1984