Assignee
Inventors
- Unknown
- Yukio Yamaguchi (50 patents)
- Norio Suzuki (205 patents)
- Shigeki Iwanami (59 patents)
- Masaaki Enya (3 patents)
- Unknown
- Unknown
- Shinya Yamamoto (256 patents)
- Yasuhiro Miura (20 patents)
US Patent 5581880 · Granted Dec 10, 1996