Granted Patent
Utility
US 4,331,273 · App. 06/153,283
Method of and apparatus for severing a glass sheet
Inventor:
Charles J. Hyatt
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: May 27, 1980
Inventor
Charles J. Hyatt
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.