Granted Patent
Utility
US 4,465,369 · App. 06/301,814
Light measuring device
Inventors:
Takashi Saegusa, Osamu Maida
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Sep 11, 1981
Inventors
Takashi Saegusa
Osamu Maida
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.