Granted Patent
Utility
US 5,169,017 · App. 07/808,078
Can end closure apparatus
Inventors:
Terry Todd Cooper, Walter Lum, Peter Douglas
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Dec 11, 1991
Inventors
Terry Todd Cooper
Walter Lum
Peter Douglas
Assignee (at issue)
H.J. HEINZ 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.