Assignee
Inventors
- Hiroyuki Nagano (53 patents)
- Takashi Mori (15 patents)
- Sakae Takaku (6 patents)
- Isao Matsunaga (19 patents)
- Tatsuo Kujirai (1 patents)
- Toshichika Ogasawara (7 patents)
- Shigeru Sugano (1 patents)
- Minoru Shindo (13 patents)
US Patent 4200640 · Granted Apr 29, 1980