Granted Patent
Utility
US 6,401,956 · App. 09/400,032
Safety container end having improved opening characteristics
Inventors:
Paul R. Heinicke, William A. Kirk
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Sep 21, 1999
Inventors
Paul R. Heinicke
William A. Kirk
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.