Granted Patent
Utility
US 4,603,950 · App. 06/570,769
Projection lens
Inventors:
Makoto Uehara, Satoshi Mogami
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Jan 16, 1984
Inventors
Makoto Uehara
Satoshi Mogami
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.