Granted Patent
Utility
US 5,528,666 · App. 08/269,594
Personal phone expansion system
Inventors:
David L. Weigand, Ralph D. Smallwood, Matthew Whiting Taylor
Patented Case
View Patent ↗
Granted: Jun 18, 1996
Filed: Jul 1, 1994
Inventors
David L. Weigand
Ralph D. Smallwood
Matthew Whiting Taylor
Assignee (at issue)
Motorola, 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.