Granted Patent
Utility
US 4,636,662 · App. 06/671,318
Method and means for increasing the frequency of update of direction information contained in two sine waves in quadrature
Inventor:
Robert S. Lundin
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 14, 1984
Inventor
Robert S. Lundin
Assignee (at issue)
Superior Electron, LLC
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.