Granted Patent
Utility
US 4,709,830 · App. 07/039,151
Closure with top cut tamper evident feature for wide mouth container
Inventor:
Walter J. Kreiseder
Patented Case
View Patent ↗
Granted: Dec 1, 1987
Filed: Apr 16, 1987
Inventor
Walter J. Kreiseder
Assignee (at issue)
Courtesy Mold & Tool 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.