Granted Patent
Utility
US 4,490,741 · App. 06/433,343
Synchronization signal stabilization for video image overlay
Inventor:
Donald L. Hornback
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Oct 8, 1982
Inventor
Donald L. Hornback
Assignee (at issue)
Heath Consultants Incorporated
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.