Assignee
Inventors
- Takeaki Baba (2 patents)
- Keizo Nanba (6 patents)
- Yoshio Takeshima (5 patents)
- Hiromichi Sano (8 patents)
- Koji Tobita (3 patents)
- Atsuo Muneto (1 patents)
- Toshihiro Hara (20 patents)
- Kazuki Fujise (4 patents)
US Patent 4931340 · Granted Jun 5, 1990