Granted Patent
Utility
US 4,523,974 · App. 06/592,040
Method of fabricating a pellicle cover for projection printing system
Inventors:
Dawn L. Duly, Henry Windischmann, W. Derek Buckley
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Mar 21, 1984
Inventors
Dawn L. Duly
Henry Windischmann
W. Derek Buckley
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.