Granted Patent
Utility
US 5,625,328 · App. 08/529,070
Stripline directional coupler tolerant of substrate variations
Inventor:
William E. Coleman
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Sep 15, 1995
Inventor
William E. Coleman
Assignee (at issue)
E-Systems, 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.