Granted Patent
Utility
US 4,517,602 · App. 06/434,935
Dynamic noise filter for an audio signal in a television
Inventors:
Wesley W. Murphy, III, James Hettiger
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Oct 18, 1982
Inventors
Wesley W. Murphy, III
James Hettiger
Assignee (at issue)
RCA 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.