Assignee
Inventors
- Koji Imoto (4 patents)
- Mataji Tateishi (5 patents)
- Tadao Omura (3 patents)
- Kunihiko Nakajima (18 patents)
- Motoyuki Maekawa (2 patents)
- Moritake Matusyama (1 patents)
- Hiroki Tamura (28 patents)
US Patent 4875445 · Granted Oct 24, 1989