Granted Patent
Utility
US 4,749,949 · App. 06/857,010
Self biasing diode microwave frequency multiplier
Inventors:
Robert D. Albin, Frank K. David
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Apr 29, 1986
Inventors
Robert D. Albin
Frank K. David
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.