Assignee
Inventors
- Hiroyuki Setoi (19 patents)
- Akio Kuroda (35 patents)
- Hirokazu Tanaka (80 patents)
- Hideo Hirai (11 patents)
- Hiroshi Marusawa (9 patents)
- Masashi Hashimoto (237 patents)
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Skip to contentUS Patent 4929639 · Granted May 29, 1990