Granted Patent
Utility
US 5,223,720 · App. 07/801,655
Predicting register mark position with data shifting and coincidence detection
Inventor:
John H. Weyer
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Dec 2, 1991
Inventor
John H. Weyer
Assignee (at issue)
Harland Crosfield Ltd.
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.