Granted Patent
Utility
US 6,056,161 · App. 09/141,658
Push-pull dispenser
Inventors:
Robert B. Brown, Gene Dorsch, Valentin Hierzer, Robert A. Simpson
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Aug 28, 1998
Inventors
Robert B. Brown
Gene Dorsch
Valentin Hierzer
Robert A. Simpson
Assignee (at issue)
Crown Cork & Seal Technologies Corporation
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.