Assignee
Inventors
- Keiki Yamaguchi (20 patents)
- Kazuyuki Tomarikawa (1 patents)
- Haruo Kurochi (12 patents)
- Jiro Namikawa (2 patents)
- Shigeru Matsumura (36 patents)
- Ryo Takahashi (74 patents)
- Shiro Mori (1 patents)
US Patent 4491734 · Granted Jan 1, 1985