Granted Patent
Utility
US 4,724,036 · App. 06/831,682
Progressively ported vacuum drum for labeling machines
Inventors:
James A. Hill, Terry C. Potter
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Feb 21, 1986
Inventors
James A. Hill
Terry C. Potter
Assignee (at issue)
Owens-Illinois Plastic Products 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.