Granted Patent
Utility
US 5,172,084 · App. 07/809,868
Miniature planar filters based on dual mode resonators of circular symmetry
Inventors:
Slawomir J. Fiedziuszko, John A. Curtis
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Dec 18, 1991
Inventors
Slawomir J. Fiedziuszko
John A. Curtis
Assignee (at issue)
Space Systems/Loral, LLC
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.