Granted Patent
Utility
US 6,549,091 · App. 09/657,668
Antenna coupler
Inventors:
Doug Spurell, Grant Shewchuk
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Sep 8, 2000
Inventors
Doug Spurell
Grant Shewchuk
Assignee (at issue)
Communications Systems International, 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.