Assignee
No assignee recorded.
Inventors
- Hideo Ohkawa (11 patents)
- Unknown
- Hironori Nakamura (29 patents)
- Shinji Funayama (3 patents)
- Takashi Hashimoto (367 patents)
- Takahiro Hirai (62 patents)
US Patent 4891399 · Granted Jan 2, 1990
No assignee recorded.