Assignee
Inventors
- Yasushi Fukunaga (42 patents)
- Soshiro Kuzunuki (42 patents)
- Hiroshi Shojima (41 patents)
- Takanori Yokoyama (22 patents)
- Kazuyoshi Koga (24 patents)
- Kotaro Hirasawa (18 patents)
- Shinichi Kawada (43 patents)
US Patent 4641354 · Granted Feb 3, 1987