Assignee
Inventors
- Kiyoshi Takagi (58 patents)
- Tadashi Naito (18 patents)
- Osamu Nakatani (1 patents)
- Toshio Inoue (184 patents)
- Masamitsu Obashi (2 patents)
- Hisashi Hiraishi (10 patents)
- Akira Shinosaki (6 patents)
- Tohru Kawai (48 patents)
US Patent 4747775 · Granted May 31, 1988