Assignee
Inventors
- Yasuo Inada (1 patents)
- Koki Sato (111 patents)
- Takazo Fujii (4 patents)
- Hideo Yokoyama (5 patents)
- Shoichi TAKAHASHI (1 patents)
- Kiyoshi Mizutani (1 patents)
- Takayoshi Kawashima (1 patents)
- Akira Nagawa (2 patents)
US Patent 4664333 · Granted May 12, 1987