Granted Patent
Utility
US 4,746,348 · App. 06/947,254
Horizontal press bending apparatus and method
Inventor:
Robert G. Frank
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Dec 29, 1986
Inventor
Robert G. Frank
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.