Assignee
Inventors
- Setsuro Fujii (70 patents)
- Jun Yamashita (52 patents)
- Hiroshi Matsumoto (432 patents)
- Setsuo Takeda (17 patents)
- Tadafumi Terada (6 patents)
- Mitsugi Yasumoto (19 patents)
- Norio Unemi (15 patents)
US Patent 5250673 · Granted Oct 5, 1993