Granted Patent
Utility
US 5,411,488 · App. 08/239,092
Pre-filled syringe and pre-filled cartridge having an improved plunger and plunger rod for reducing syringing force
Inventors:
Shrikant N. Pagay, Robert J. Bachorik, II, Richard T. Liebert
Patented Case
View Patent ↗
Granted: May 2, 1995
Filed: May 6, 1994
Inventors
Shrikant N. Pagay
Robert J. Bachorik, II
Richard T. Liebert
Assignee (at issue)
Sterling Winthrop 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.