Granted Patent
Utility
US 4,523,830 · App. 06/424,336
Automatic control type electronic flash apparatus
Inventors:
Yoshikazu Iida, Nobuyoshi Hagyuda, Hiroshi Hasegawa
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Sep 27, 1982
Inventors
Yoshikazu Iida
Nobuyoshi Hagyuda
Hiroshi Hasegawa
Assignee (at issue)
Nippon Kogaku K.K.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.