Granted Patent
Utility
US 5,149,980 · App. 07/786,495
Substrate advance measurement system using cross-correlation of light sensor array signals
Inventors:
John P. Ertel, William D. Holland, Kent D. Vincent, Rueiming Jamp, Richard R. Baldwin
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Nov 1, 1991
Inventors
John P. Ertel
William D. Holland
Kent D. Vincent
Rueiming Jamp
Richard R. Baldwin
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.