Granted Patent
Utility
US 5,694,136 · App. 08/614,546
Antenna with R-card ground plane
Inventor:
Brian Westfall
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Mar 13, 1996
Inventor
Brian Westfall
Assignee (at issue)
Trimble Navigation Limited
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.