Assignee
Inventors
- Shinji Aoki (202 patents)
- Keita Kawamura (7 patents)
- Tsutomu Higo (14 patents)
- Hitoshi Kimura (86 patents)
- Yasuhiro Sawada (69 patents)
- Tsutomu Katayama (10 patents)
- Katsumi Kengaku (3 patents)
US Patent 4283937 · Granted Aug 18, 1981