Granted Patent
Utility
US 5,317,291 · App. 08/020,044
Microstrip filter with reduced ground plane
Inventor:
Allen F. Podell
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Feb 19, 1993
Inventor
Allen F. Podell
Assignee (at issue)
Pacific Monolithics, Inc.
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.