Assignee
Inventors
- Yoshiyuki Shikata (3 patents)
- Ryoichi Nanba (8 patents)
- Isamu Endo (2 patents)
- Masashi Isozaki (12 patents)
- Tadashi Okumura (1 patents)
- Masazumi Miyakoshi (2 patents)
- Shingo Koyama (26 patents)
US Patent 5037837 · Granted Aug 6, 1991