Granted Patent
Utility
US 4,801,185 · App. 07/032,783
Directional coupler
Inventor:
Terry Bricheno
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Mar 31, 1987
Inventor
Terry Bricheno
Assignee (at issue)
STC PLC
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.