Granted Patent
Utility
US 4,449,168 · App. 06/311,833
Quick install device for mounting a luminaire
Inventor:
Robert L. Ewing
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Oct 16, 1981
Inventor
Robert L. Ewing
Assignee (at issue)
Manville Service 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.