Granted Patent
Utility
US 4,415,957 · App. 06/234,075
Patient light with hanger and hinge arrangement for removal without tools
Inventor:
Wesley W. Schwartz
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Feb 13, 1981
Inventor
Wesley W. Schwartz
Assignee (at issue)
Square D Company
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.