Granted Patent
Utility
US 4,352,194 · App. 06/172,214
System and method for frequency discrimination
Inventor:
Michael G. Caracappa
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Jul 25, 1980
Inventor
Michael G. Caracappa
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.