Granted Patent
Utility
US 5,301,016 · App. 07/987,894
Method of and arrangement for deriving a control signal for inserting a background signal into parts of a foreground signal
Inventor:
Rainer Gehrmann
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Dec 4, 1992
Inventor
Rainer Gehrmann
Assignee (at issue)
U.S. Philips Corporation
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.