Granted Patent
Utility
US 4,755,053 · App. 06/931,302
Secondary alignment fiducials for automatic alignment using machine vision.
Inventors:
Mitchell E. Levinson, Thomas T. Frankie
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Nov 12, 1986
Inventors
Mitchell E. Levinson
Thomas T. Frankie
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.