Assignee
Inventors
- Shigezo Udaka (13 patents)
- Shigeyoshi Miyashiro (5 patents)
- Kazuo Hirayama (6 patents)
- Toshihiko Ando (1 patents)
- Asao Murai (3 patents)
- Tsuyoshi Shiio (5 patents)
- Takao Kida (10 patents)
- Hiroshiro Shibai (10 patents)
US Patent 4560748 · Granted Dec 24, 1985