Assignee
Inventors
- Masahiro Kawashima (32 patents)
- Koji Kambara (12 patents)
- Tsuruo Hatori (11 patents)
- Nobuaki Akui (28 patents)
- Nobuhiko Washizuka (6 patents)
- Kunio Ohno (9 patents)
- Yoshio Tashiro (48 patents)
US Patent 4756303 · Granted Jul 12, 1988