Granted Patent
Utility
US 4,338,233 · App. 06/273,791
Aqueous sizing composition and sized glass fibers and method
Inventors:
Balbhadra Das, L. Dow Moore
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Jun 15, 1981
Inventors
Balbhadra Das
L. Dow Moore
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.