Assignee
Inventors
- Keiichiro Shimizu (12 patents)
- Eiji Kuwahara (32 patents)
- Manabu Kitamoto (9 patents)
- Masao Amano (30 patents)
- Yasunori Ichikawa (41 patents)
- Masayuki Hibi (11 patents)
- Keizo Iwata (2 patents)
US Patent 5317907 · Granted Jun 7, 1994