Granted Patent
Utility
US 6,756,949 · App. 10/252,429
Wideband cavity-backed antenna
Inventor:
John L. Schadler
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Sep 24, 2002
Inventor
John L. Schadler
Assignee (at issue)
SPX 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.