Assignee
Inventors
- Takanobu Hirayama (4 patents)
- Hiroyuki Funahashi (31 patents)
- Eiji Yokota (9 patents)
- Mitsuyoshi Uehara (5 patents)
- Isao Kagami (6 patents)
- Makoto Hasegawa (216 patents)
- Masaru Mizuno (4 patents)
US Patent 4929105 · Granted May 29, 1990