Granted Patent
Utility
US 6,809,869 · App. 10/229,668
Zoomable beamspreader for non-imaging illumination applications
Inventor:
Thomas A. Hough
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Aug 28, 2002
Inventor
Thomas A. Hough
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.