Assignee
Inventors
- Fumio Matsuoka (28 patents)
- Hitoshi Iijima (32 patents)
- Kisuke Yamazaki (7 patents)
- Hiroshi Kasagi (2 patents)
- Yasuo Nakashima (31 patents)
- Kiyoshi Sakuma (28 patents)
- Mitsuo Umehara (2 patents)
US Patent 4499739 · Granted Feb 19, 1985