Granted Patent
Utility
US 4,534,201 · App. 06/454,420
Undercut punch to control ironing
Inventors:
John LaRosa, David C. Panipinto
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Dec 29, 1982
Inventors
John LaRosa
David C. Panipinto
Assignee (at issue)
American Can 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.