Granted Patent
Utility
US 5,459,955 · App. 08/160,587
Lighting device used in an exit sign
Inventors:
Charles R. Ruskouski, James J. Burnes, James R. Carson, Hilario Costa
Patented Case
View Patent ↗
Granted: Oct 24, 1995
Filed: Dec 1, 1993
Inventors
Charles R. Ruskouski
James J. Burnes
James R. Carson
Hilario Costa
Assignee (at issue)
Federal Signal 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.