Granted Patent
Utility
US 4,631,950 · App. 06/611,521
Progressive former with removable tooling
Inventors:
Thomas E. Hay, Robert E. Wisebaker, Gaylen O. Kline
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: May 17, 1984
Inventors
Thomas E. Hay
Robert E. Wisebaker
Gaylen O. Kline
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.