Granted Patent
Utility
US 6,243,026 · App. 09/432,693
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: Jun 5, 2001
Filed: Nov 3, 1999
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.