Granted Patent
Utility
US 4,374,399 · App. 06/292,453
Insertion of non-synchronous data into vertical interval
Inventor:
James W. Ensinger
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Aug 13, 1981
Inventor
James W. Ensinger
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.