Granted Patent
Utility
US 5,370,520 · App. 08/224,365
Apparatus for making a tamper indicating closure
Inventors:
Keith W. Ingram, Daniel J. Crowley, Jr.
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Apr 7, 1994
Inventors
Keith W. Ingram
Daniel J. Crowley, Jr.
Assignee (at issue)
Owens-Illinois Closure 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.