Granted Patent
Utility
US 5,964,821 · App. 08/735,305
Mapless GPS navigation system with sortable destinations and zone preference
Inventors:
Randall T. Brunts, Douglas L. Welk
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Oct 21, 1996
Inventors
Randall T. Brunts
Douglas L. Welk
Assignee (at issue)
DELCO ELECTRONICS CORPORATION
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.