Granted Patent
Utility
US 4,338,110 · App. 06/251,589
Bushing for producing glass fibers
Inventor:
William M. Babbitt
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Apr 6, 1981
Inventor
William M. Babbitt
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.