Granted Patent
Utility
US 4,535,909 · App. 06/592,831
Easy opening container system
Inventor:
Edgar H. Zysset
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Mar 23, 1984
Inventor
Edgar H. Zysset
Assignee (at issue)
Automated Container 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.