Granted Patent
Utility
US 4,383,743 · App. 06/246,217
Water-proof camera
Inventors:
Hideyo Nozawa, Toshio Dobashi
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Mar 23, 1981
Inventors
Hideyo Nozawa
Toshio Dobashi
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.