Granted Patent
Utility
US 6,731,416 · App. 10/029,447
Holographic privacy filter for display devices
Inventor:
Thomas B. Hazzard
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Dec 14, 2001
Inventor
Thomas B. Hazzard
Assignee (at issue)
ttools, 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.