Granted Patent
Utility
US 6,148,261 · App. 08/879,955
Personal communication system to send and receive voice data positioning information
Inventors:
Michael L. Obradovich, John Dinkel, Michael Kent
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jun 20, 1997
Inventors
Michael L. Obradovich
John Dinkel
Michael Kent
Assignee (at issue)
American Calcar, 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.