Granted Patent
Utility
US 5,175,557 · App. 07/732,378
Two channel global positioning system receiver
Inventors:
Thomas M. King, Howard L. Kennedy
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Jul 18, 1991
Inventors
Thomas M. King
Howard L. Kennedy
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.