Granted Patent
Utility
US 4,643,750 · App. 05/649,955
Method and apparatus for producing glass fibers
Inventor:
Hellmut I. Glaser
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jan 16, 1976
Inventor
Hellmut I. Glaser
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.