Granted Patent
Utility
US 4,257,532 · App. 06/066,910
Rotary closure dispenser
Inventor:
Christopher P. Amberg
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Aug 16, 1979
Inventor
Christopher P. Amberg
Assignee (at issue)
Owens-Illinois 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.