Granted Patent
Utility
US 4,660,087 · App. 06/834,911
Video signal processing system with offset sound trap
Inventor:
Mark Francis Rumreich
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Feb 28, 1986
Inventor
Mark Francis Rumreich
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.