Granted Patent
Utility
US 4,564,269 · App. 06/643,436
Projection lens
Inventor:
Makoto Uehara
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Aug 23, 1984
Inventor
Makoto Uehara
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.