Granted Patent
Utility
US 5,156,329 · App. 07/748,231
Seal testable container structure
Inventor:
Christopher John Farrell
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Aug 7, 1991
Inventor
Christopher John Farrell
Assignee (at issue)
American National 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.