Granted Patent
Utility
US 5,340,421 · App. 08/128,180
Method using a cam for folding a seal removal tab on a collapsible tube
Inventors:
Patrick P. Shea, Henry Darlington
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Nov 18, 1993
Inventors
Patrick P. Shea
Henry Darlington
Assignee (at issue)
Teledyne Industries, 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.