Granted Patent
Utility
US 6,364,174 · App. 09/789,472
Pump dispenser having piston retainer and stop
Inventors:
Richard D. Lohrman, Wing-Kwong Keung, Gennaro R. Martire, Bradley J. Kimble, Richard C. Sayers
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Feb 21, 2001
Inventors
Richard D. Lohrman
Wing-Kwong Keung
Gennaro R. Martire
Bradley J. Kimble
Richard C. Sayers
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.