Granted Patent
Utility
US 5,986,575 · App. 08/893,232
Automatic determination of traffic signal preemption using GPS, apparatus and method
Inventors:
Gary V. Jones, Kevin Judge, James C. Beck, Richard G. Keegan
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Jul 15, 1997
Inventors
Gary V. Jones
Kevin Judge
James C. Beck
Richard G. Keegan
Assignee (at issue)
3M INNOVATIVE PROPERTIES COMPANY
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.