Assignee
Inventors
- Keiichi Takahashi (74 patents)
- Takao Iida (25 patents)
- Kunikatsu Shirahata (32 patents)
- Masahiro Sugimoto (4 patents)
- Shinzo Ishii (10 patents)
- Ryo Okachi (9 patents)
- Takashi Nara (6 patents)
US Patent 4209612 · Granted Jun 24, 1980