Assignee
Inventors
- Takanori Hasegawa (58 patents)
- Nobuyuki Abe (11 patents)
- Toshihiko Hirose (27 patents)
- Takashi Kanda (67 patents)
- Hiroshi Saito (382 patents)
- Eiji Nakazawa (28 patents)
- Masaki Oshima (25 patents)
US Patent 4956664 · Granted Sep 11, 1990