Granted Patent
Utility
US 4,471,165 · App. 06/202,020
Portable keyboard operated telecommunications system
Inventors:
John M. DeFino, John Stannard, Gary G. Voget, Rufus Coomer
Patented Case
View Patent ↗
Granted: Sep 11, 1984
Filed: Oct 28, 1980
Inventors
John M. DeFino
John Stannard
Gary G. Voget
Rufus Coomer
Assignee (at issue)
Pinetree 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.