Granted Patent
Utility
US 6,563,404 · App. 09/880,381
Voltage tunable patch filter element with dielectrically loaded slot
Inventors:
Slawomir J. Fiedziuszko, Raymond Kwok
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jun 13, 2001
Inventors
Slawomir J. Fiedziuszko
Raymond Kwok
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.