Assignee
Inventors
- Minobu Sukimoto (12 patents)
- Katsumi Yamazaki (2 patents)
- Naohisa Hirunuma (2 patents)
- Seijiro Taguchi (5 patents)
- Tadashi Usui (4 patents)
- Yasushi Akiyoshi (2 patents)
- Toyoichiro Nogami (2 patents)
- Toyoji Kaneko (2 patents)
US Patent 4887557 · Granted Dec 19, 1989