Granted Patent
Utility
US 6,767,494 · App. 10/236,241
Method and apparatus for injection molding a threaded syringe plunger rod
Inventor:
Philip J. Robinson
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Sep 6, 2002
Inventor
Philip J. Robinson
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.