Granted Patent
Utility
US 6,053,371 · App. 09/079,481
Pump dispenser and method for making same
Inventors:
Leonora M. Durliat, Paul R. Graham
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: May 15, 1998
Inventors
Leonora M. Durliat
Paul R. Graham
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.