Assignee
Inventors
- Tadakatsu Nakajima (50 patents)
- Wataru Nakayama (36 patents)
- Shigeo Oohashi (1 patents)
- Heikichi Kuwabara (4 patents)
- Takahiro Daikoku (60 patents)
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Skip to contentUS Patent 4823863 · Granted Apr 25, 1989