Granted Patent
Utility
US 6,428,261 · App. 09/578,044
Method of forming a safety can end
Inventor:
Edgar H. Zysset
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: May 24, 2000
Inventor
Edgar H. Zysset
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.