Granted Patent
Utility
US 4,283,689 · App. 06/039,717
Microwave oscillator circuit with improved efficiency
Inventor:
Hindrik Tjassens
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: May 17, 1979
Inventor
Hindrik Tjassens
Assignee (at issue)
U.S. Philips 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.