Assignee
Inventors
- Naminosuke Kubota (2 patents)
- Yutaka Yano (45 patents)
- Yasumasa Takagi (3 patents)
- Kazuyoshi Ninomiya (3 patents)
- Nobuo Shimoguti (1 patents)
- Mituhiko Terashima (1 patents)
- Tooru Nakano (1 patents)
- Hirohito Ohtsuka (1 patents)
US Patent 4913379 · Granted Apr 3, 1990