Granted Patent
Utility
US 4,041,305 · App. 05/700,461
Luminaire using one-way mirror as exterior lens
Inventor:
John R. Dean
Patented Case
View Patent ↗
Granted: Aug 9, 1977
Filed: Jun 28, 1976
Inventor
John R. Dean
Assignee (at issue)
International Telephone and Telegraph Corporation
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.