Granted Patent
Utility
US 4,394,414 · App. 06/268,541
Aqueous sizing composition for glass fibers for use on chopped glass fibers
Inventors:
Daniel G. Brown, Donald L. Motsinger
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: May 29, 1981
Inventors
Daniel G. Brown
Donald L. Motsinger
Assignee (at issue)
PPG Industries, 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.