Granted Patent
Utility
US 4,635,135 · App. 05/268,916
Recording bias method and circuit
Inventor:
Henry R. Warren
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Jun 1, 1981
Inventor
Henry R. Warren
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.