Granted Patent
Utility
US 4,722,216 · App. 06/346,413
Radial forging method
Inventor:
Vernon R. Fencl
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Feb 8, 1982
Inventor
Vernon R. Fencl
Assignee (at issue)
Grotnes Metalforming Systems, 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.