Granted Patent
Utility
US 5,325,995 · App. 08/051,826
Piercing nozzle for pouch fitment
Inventors:
Raymond P. Harrison, Ralph C. Wirsig
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Apr 26, 1993
Inventors
Raymond P. Harrison
Ralph C. Wirsig
Assignee (at issue)
DuPont Canada 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.