Assignee
Inventors
- Michio Tsukii (8 patents)
- Kunio Shimada (4 patents)
- Eiichi Nishiyama (2 patents)
- Takumi Karasawa (13 patents)
- Fumiaki Yonai (2 patents)
- Hiroshi Yoshioka (186 patents)
- Takashi Atobe (11 patents)
US Patent 5028898 · Granted Jul 2, 1991