Granted Patent
Utility
US 4,343,642 · App. 06/174,481
Method for attenuating float glass
Inventor:
Charles K. Edge
Patented Case
View Patent ↗
Granted: Aug 10, 1982
Filed: Aug 1, 1980
Inventor
Charles K. Edge
Assignee (at issue)
PPG Industries, Inc.
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.