Assignee
Inventors
- Yuuji Maeda (31 patents)
- Yozo Nakamura (38 patents)
- Kenichi Nakamura (177 patents)
- Masahide Sakamoto (24 patents)
- Yuzo Kadomukai (76 patents)
- Masao Fukushima (23 patents)
- Kei Murakami (8 patents)
US Patent 5109815 · Granted May 5, 1992