Granted Patent
Utility
US 4,922,344 · App. 07/316,391
Circuit arrangement for evaluating a video synchronizing signal
Inventor:
Maximilian Riegel
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Feb 27, 1989
Inventor
Maximilian Riegel
Assignee (at issue)
U.S. Philips 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.