Granted Patent
Utility
US 4,422,862 · App. 06/357,496
Process for reusing scrap glass
Inventor:
William G. Wardlaw
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Mar 12, 1982
Inventor
William G. Wardlaw
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.