Granted Patent
Utility
US 5,806,972 · App. 08/735,090
Light trap and louver mounting to fluorescent troffer lighting fixture
Inventors:
Jeffrey Wayne Kaiser, Peter M. Schmidt, Roger Erle Norris
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Oct 21, 1996
Inventors
Jeffrey Wayne Kaiser
Peter M. Schmidt
Roger Erle Norris
Assignee (at issue)
National Service Industries, 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.