Granted Patent
Utility
US 6,011,640 · App. 08/995,506
High intensity lighting projectors
Inventor:
Richard W. Hutton
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Dec 22, 1997
Inventor
Richard W. Hutton
Assignee (at issue)
Vari-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.