Granted Patent
Utility
US 4,597,789 · App. 06/764,465
Tungsten alloy bending mold inserts
Inventor:
Thomas J. Reese
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Aug 12, 1985
Inventor
Thomas J. Reese
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.