Assignee
Inventors
- Tsutomu Sugasawa (9 patents)
- Tatsuo Toyoda (6 patents)
- Kazuyuki Sasakura (7 patents)
- Shiro Ueda (4 patents)
- Akira Takase (26 patents)
- Katsuto Okuno (1 patents)
- Ichiro Ishizuka (8 patents)
- Shinzaburo Sumimoto (7 patents)
US Patent 4186144 · Granted Jan 29, 1980