Granted Patent
Utility
US 4,274,853 · App. 06/086,897
Method and apparatus for the production of glass fibers
Inventor:
Terry Joe Hanna
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Oct 22, 1979
Inventor
Terry Joe Hanna
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.