Granted Patent
Utility
US 6,019,477 · App. 08/888,155
Emergency lighting device
Inventors:
Joseph S. Wegrzyn, Jeff Holmes, Milt Erickson
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Jul 3, 1997
Inventors
Joseph S. Wegrzyn
Jeff Holmes
Milt Erickson
Assignee (at issue)
Dual-Lite Inc.
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.