Assignee
Inventors
- Kazuo Shigematsu (69 patents)
- Keizo Kato (21 patents)
- Toshimitsu Miyauchi (6 patents)
- Seiji Yonezawa (47 patents)
- Fumiyuki Inose (6 patents)
- Kimio Tatsuno (49 patents)
- Takeshi Maeda (228 patents)
US Patent 4241240 · Granted Dec 23, 1980