Granted Patent
Utility
US 6,563,427 · App. 09/967,239
Proximity monitoring communication system
Inventors:
Robert J. Bero, William P. Alberth, Jr.
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Sep 28, 2001
Inventors
Robert J. Bero
William P. Alberth, Jr.
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.