Granted Patent
Utility
US 4,580,161 · App. 06/443,546
Cable television subscriber control system including addressable filters having a variable pole
Inventors:
Peter R. Petrus, Raymond F. St. Louis
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Nov 22, 1982
Inventors
Peter R. Petrus
Raymond F. St. Louis
Assignee (at issue)
Pico Products, Inc.
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.