Assignee
Inventors
- Yuji Maeda (11 patents)
- Hideyuki Yamato (8 patents)
- Takayoshi Fujii (50 patents)
- Yasuhiko Kobayashi (4 patents)
- Kenichi Saito (15 patents)
- Tadaaki Kato (13 patents)
- Chikao Yoshikumi (65 patents)
US Patent 4590184 · Granted May 20, 1986