Granted Patent
Utility
US 4,350,422 · App. 06/266,115
Battery checking device of a motor driven camera
Inventor:
Osamu Maida
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: May 21, 1981
Inventor
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.