Granted Patent
Utility
US 5,188,447 · App. 07/822,742
Illuminating system
Inventors:
Lee Chiang, William R. Ratcliffe
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Jan 21, 1992
Inventors
Lee Chiang
William R. Ratcliffe
Assignee (at issue)
MARPOLE INTERNATIONAL, 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.