Granted Patent
Utility
US 4,472,959 · App. 06/348,859
Removable multi-die cartridge for shrink forming machine
Inventor:
Vernon R. Fencl
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Feb 16, 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.