Granted Patent
Utility
US 4,638,360 · App. 06/771,700
Timing correction for a picture-in-picture television system
Inventors:
Todd J. Christopher, Donald H. Willis, Russell T. Fling
Patented Case
View Patent ↗
Granted: Jan 20, 1987
Filed: Sep 3, 1985
Inventors
Todd J. Christopher
Donald H. Willis
Russell T. Fling
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.