Granted Patent
Utility
US 4,553,161 · App. 06/648,569
Upstream data packet time slot synchronization with downstream VBI for two-way CATV system
Inventor:
Richard W. Citta
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Sep 6, 1984
Inventor
Richard W. Citta
Assignee (at issue)
Zenith Electronics LLC
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.