Granted Patent
Utility
US 4,656,501 · App. 06/793,644
Image transition detector
Inventors:
Robert F. Casey, Kirk A. Law
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 31, 1985
Inventors
Robert F. Casey
Kirk A. Law
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.