Assignee
Inventors
- Ryutaro Ohashi (5 patents)
- Hisashi Hasegawa (42 patents)
- Masao Miyoshi (1 patents)
- Hajime Iida (9 patents)
- Toshiyuki Mase (1 patents)
- Takashi Tanaka (236 patents)
- Tsunemasa Funatsu (2 patents)
- Tami Nakanishi (1 patents)
US Patent 4589261 · Granted May 20, 1986