Assignee
Inventors
- Masao Ogawa (12 patents)
- Toyoo Harada (11 patents)
- Shinichi Toyosawa (28 patents)
- Isamu Shinoda (7 patents)
- Takahiro Kawagoe (40 patents)
- Hideharu Daifuku (14 patents)
- Yoshitomo Masuda (30 patents)
US Patent 4824745 · Granted Apr 25, 1989