Granted Patent
Utility
US 5,828,402 · App. 08/761,091
Method and apparatus for selectively blocking audio and video signals
Inventor:
Timothy D. Collings
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Dec 5, 1996
Inventor
Timothy D. Collings
Assignee (at issue)
Canadian V-Chip Design 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.