Granted Patent
Utility
US 5,606,560 · App. 08/311,309
Between a base station and a portable device
Inventors:
Charles J. Malek, David L. Weigand
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Sep 23, 1994
Inventors
Charles J. Malek
David L. Weigand
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.