Granted Patent
Utility
US 4,870,331 · App. 07/262,913
Circuit arrangement for a picture display device for the stabilization of the size of the picture displayed
Inventor:
Paul H. Heinzerling
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Oct 25, 1988
Inventor
Paul H. Heinzerling
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.