Granted Patent
Utility
US 4,459,476 · App. 06/340,604
Co-ordinate detection system
Inventors:
William W. Weissmueller, James J. Fitzgibbon
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Jan 19, 1982
Inventors
William W. Weissmueller
James J. Fitzgibbon
Assignee (at issue)
Zenith Radio Corporation
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.