Granted Patent
Utility
US 6,643,941 · App. 09/912,273
Vehicle compass system with continuous automatic calibration
Inventors:
Jeffrey N. Parks, Thomas R. Olson, David J. Slater
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jul 24, 2001
Inventors
Jeffrey N. Parks
Thomas R. Olson
David J. Slater
Assignee (at issue)
Johnson Controls Technology 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.