Granted Patent
Utility
US 4,639,780 · App. 06/718,365
Television synchronizing apparatus
Inventor:
Donald H. Willis
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Apr 1, 1985
Inventor
Donald H. Willis
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.