Assignee
Inventors
- Shigeo Nemoto (4 patents)
- Osamu Namikawa (9 patents)
- Kiyomi Tsuchiya (6 patents)
- Isao Nakajima (69 patents)
- Yasuo Kikuchi (23 patents)
- Tomio Sugaya (10 patents)
- Toshitaka Ogawa (22 patents)
- Sigenobu Katagiri (1 patents)
US Patent 4961704 · Granted Oct 9, 1990