Granted Patent
Utility
US 4,764,967 · App. 07/073,338
Tone control system for sampled data signals
Inventor:
Todd J. Christopher
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Jul 13, 1987
Inventor
Todd J. Christopher
Assignee (at issue)
RCA Licensing 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.