Granted Patent
Utility
US 4,967,172 · App. 07/329,806
Microwave phase shifter circuit
Inventors:
Joelle Ariel, Jacques Legendre
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Mar 28, 1989
Inventors
Joelle Ariel
Jacques Legendre
Assignee (at issue)
Thomson-CSF
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.