Assignee
Inventors
- Tohei Moritani (17 patents)
- Hidemasa Oda (8 patents)
- Toshiaki Sato (132 patents)
- Taichi Negi (19 patents)
- Keiji Matsumura (7 patents)
- Syuji Kawai (16 patents)
- Nobuo Tanaka (54 patents)
- Satoshi Hirofuji (17 patents)
US Patent 4929482 · Granted May 29, 1990