Assignee
Inventors
- Hiromu Murai (3 patents)
- Katsuya Ohata (4 patents)
- Hiroshi Enomoto (36 patents)
- Shoichi Chokai (12 patents)
- Mitsuhiro Maehara (3 patents)
- Katsuhide Saito (2 patents)
- Takayuki Ozaki (17 patents)
US Patent 4237132 · Granted Dec 2, 1980