Granted Patent
Utility
US 4,414,432 · App. 06/304,226
Pseudo-full duplex television/telephone loudspeaker system
Inventors:
Peter C. Skerlos, Thomas J. Zato
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Sep 21, 1981
Inventors
Peter C. Skerlos
Thomas J. Zato
Assignee (at issue)
Zenith Radio 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.