Assignee
Inventors
- Hideo Nishimura (32 patents)
- Yasufumi Tokura (2 patents)
- Kunihiko Unno (16 patents)
- Minoru Enomoto (56 patents)
- Isamu Yokoe (2 patents)
- Norihiko Shimizu (7 patents)
- Haruo Ohmura (12 patents)
US Patent 4266375 · Granted May 12, 1981