Granted Patent
Utility
US 4,642,691 · App. 06/705,494
Television signal input filter
Inventor:
Dursun Sakarya
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Feb 28, 1985
Inventor
Dursun Sakarya
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.