Granted Patent
Utility
US 5,339,246 · App. 07/852,651
Apparatus for correcting vehicular compass heading with the aid of the global positioning system
Inventor:
Wei-Wen Kao
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Mar 17, 1992
Inventor
Wei-Wen Kao
Assignee (at issue)
Zexel Corporation Daihatsu-Nissay
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.