Granted Patent
Utility
US 4,486,941 · App. 06/519,414
Punch press with automatic tool changer
Inventors:
William B. Scott, Daniel C. Dickinson, Joel C. E. Arnesson
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Aug 1, 1983
Inventors
William B. Scott
Daniel C. Dickinson
Joel C. E. Arnesson
Assignee (at issue)
W.A. Whitney Co.
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.