Granted Patent
Utility
US 4,423,942 · App. 06/316,416
Camera with selectable electromagnetic and mechanical shutter release
Inventors:
Mikihito Furuya, Koichi Daitoku
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Oct 29, 1981
Inventors
Mikihito Furuya
Koichi Daitoku
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.