Granted Patent
Utility
US 4,382,050 · App. 06/318,883
Method for handling heat-softenable batch material
Inventor:
Stephen Seng
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Nov 6, 1981
Inventor
Stephen Seng
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.