Granted Patent
Utility
US 4,241,136 · App. 06/016,270
Glass fiber size composition and process
Inventor:
Ernst Dereser
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Mar 5, 1979
Inventor
Ernst Dereser
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.