Granted Patent
Utility
US 5,528,630 · App. 08/230,263
Coupler for communication systems which utilize more than one frequency band
Inventors:
Francis R. Ashley, Steven Daubert
Patented Case
View Patent ↗
Granted: Jun 18, 1996
Filed: Apr 20, 1994
Inventors
Francis R. Ashley
Steven Daubert
Assignee (at issue)
AT&T CORP.
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.