Granted Patent
Utility
US 6,250,510 · App. 09/525,311
Pump dispenser and method for making same
Inventors:
Leonora M. Durliat, Paul R. Graham
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Mar 13, 2000
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.