Assignee
Inventors
- Masakazu Nakao (3 patents)
- Koro Takatsuka (1 patents)
- Shohei Murakami (5 patents)
- Hiroshi Takagi (167 patents)
- Yoshinori Onoe (4 patents)
- Hiraku Tsuchiya (2 patents)
- Satoru Ikenaga (2 patents)
- Michihisa Taguchi (3 patents)
US Patent 4567934 · Granted Feb 4, 1986