Assignee
Inventors
- Masakatsu Shibasaki (40 patents)
- Atsuo Takahashi (5 patents)
- Tuyoshi Aoki (1 patents)
- Kentaro Kogi (8 patents)
- Yozo Nishimiya (1 patents)
- Takeshi Nara (6 patents)
- Takashi Yamaguchi (417 patents)
US Patent 4837342 · Granted Jun 6, 1989