Assignee
Inventors
- Syuji Kawai (16 patents)
- Seio Anzai (2 patents)
- Toshinori Ishii (13 patents)
- Kenji Shirano (5 patents)
- Kunihiko Shimamura (9 patents)
- Toshimasa Kanemitsu (1 patents)
- Keiji Matsumura (7 patents)
US Patent 4810542 · Granted Mar 7, 1989