Granted Patent
Utility
US 4,178,412 · App. 05/895,883
Glass size compositions and glass fibers coated therewith
Inventors:
Donald B. Sage, Fred G. Krautz
Patented Case
View Patent ↗
Granted: Dec 11, 1979
Filed: Apr 13, 1978
Inventors
Donald B. Sage
Fred G. Krautz
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.