Granted Patent
Utility
US 4,437,760 · App. 06/327,862
Reusable electrical overlay measurement circuit and process
Inventor:
Christoper P. Ausschnitt
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Dec 7, 1981
Inventor
Christoper P. Ausschnitt
Assignee (at issue)
PerkinElmer, Inc.
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.