Granted Patent
Utility
US 5,005,397 · App. 07/434,301
Method for providing progressive formers with quick-change tooling
Inventors:
William H. Hite, Gene E. Allebach
Patented Case
View Patent ↗
Granted: Apr 9, 1991
Filed: Nov 13, 1989
Inventors
William H. Hite
Gene E. Allebach
Assignee (at issue)
NATIONAL MACHINE COMPANY
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.