Assignee
Inventors
- Shoichi Kume (12 patents)
- Haruo Yoshida (64 patents)
- Kazutaka Suzuki (107 patents)
- Yoshio Tasaki (4 patents)
- Shiro Ikuta (8 patents)
- Masamitu Ishikawa (2 patents)
- Michihide Machida (6 patents)
US Patent 4902652 · Granted Feb 20, 1990