Granted Patent
Utility
US 4,832,646 · App. 07/145,637
Aging process for cathode ray tubes
Inventors:
Samuel Sunwhee Chung, Charles H. Rehkopf, Franklin G. Reigel, Doanld L. Siefker, James R. Stowe
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Jan 11, 1988
Inventors
Samuel Sunwhee Chung
Charles H. Rehkopf
Franklin G. Reigel
Doanld L. Siefker
James R. Stowe
Assignee (at issue)
North American Philips Consumer Electronics Corp.
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.