Granted Patent
Utility
US 5,169,549 · App. 07/723,030
Method of producing nickel shell molds
Inventor:
Reinhart Weber
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Jun 28, 1991
Inventor
Reinhart Weber
Assignee (at issue)
Nickel Tooling Technology 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.