Granted Patent
Utility
US 6,170,720 · App. 09/552,722
Dispensing closure with spout vent
Inventors:
Maurice R. Gnepper, Thomas A. Kozlowski
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Apr 19, 2000
Inventors
Maurice R. Gnepper
Thomas A. Kozlowski
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.