Granted Patent
Utility
US 6,619,821 · App. 09/291,868
High efficiency asymmetrical optical assembly
Inventor:
William Bradley Waycaster
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Apr 14, 1999
Inventor
William Bradley Waycaster
Assignee (at issue)
GENLYTE THOMAS GROUP, LLC
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.