Granted Patent
Utility
US 4,310,230 · App. 06/126,349
Apparatus for preventing malfunction of an electric shutter device
Inventor:
Ryuzo Motoori
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Mar 3, 1980
Inventor
Ryuzo Motoori
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.