Granted Patent
Utility
US 6,508,704 · App. 09/607,572
Air vent apparatus for blocking light
Inventor:
Clark Wilson
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jun 29, 2000
Inventor
Clark Wilson
Assignee (at issue)
InFocus Systems, 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.