Granted Patent
Utility
US 5,406,491 · App. 08/037,340
Navigational system for trip routing
Inventor:
David J. Lima
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Mar 26, 1993
Inventor
David J. Lima
Assignee (at issue)
Trimble Navigation Limited
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.