Assignee
Inventors
- Unknown
- Yoshio Okada (4 patents)
- Akiko Okunomiya (3 patents)
- Taketoshi Naito (8 patents)
- Yoshio Kimura (2 patents)
- Morihiko Yamada (2 patents)
- Norio Ohno (3 patents)
- Yasuhiro Katsuura (2 patents)
- Yumi Seki (1 patents)
US Patent 4895842 · Granted Jan 23, 1990