Assignee
Inventors
- Tatsuo Haneishi (15 patents)
- Takao Okazaki (11 patents)
- Akio Torikata (9 patents)
- Mutsuo Nakajima (17 patents)
- Ryuzo Enokita (6 patents)
- Toshiaki Katayama (5 patents)
- Seigo Iwado (10 patents)
US Patent 4918054 · Granted Apr 17, 1990