Assignee
Inventors
- Masanori FUKUSHIMA (5 patents)
- Osamu Hirai (1 patents)
- Toshitaka Manda (2 patents)
- Hiroyuki Kikuchi (4 patents)
- Yasumasa Tsukitani (1 patents)
- Iwao Shimizu (2 patents)
- Yasuji Yamada (19 patents)
US Patent 4560703 · Granted Dec 24, 1985