Granted Patent
Utility
US 4,330,337 · App. 06/131,580
Glass fibers with improved dispersibility in aqueous solutions and sizing composition and process for making same
Inventor:
Roy R. Graham
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Mar 19, 1980
Inventor
Roy R. Graham
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.