Granted Patent
Utility
US 4,354,750 · App. 06/226,012
Flash unit having a flash output control device
Inventors:
Hiroshi Hasegawa, Osamu Maida
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Jan 19, 1981
Inventors
Hiroshi Hasegawa
Osamu Maida
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.