Assignee
Inventors
- Sizuo Thuruta (2 patents)
- Yoshiaki Takeda (10 patents)
- Isao Hiyama (10 patents)
- Unknown
- Toshikazu Ohonishi (2 patents)
- Hideyuki Tobita (9 patents)
- Tamotu Shikamori (12 patents)
- Hiroshi Ohsugi (9 patents)
US Patent 4779430 · Granted Oct 25, 1988