Granted Patent
Utility
US 6,325,227 · App. 09/531,973
Tamper-indicating closure with horizontal undercuts
Inventor:
Len Ekkert
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Mar 20, 2000
Inventor
Len Ekkert
Assignee (at issue)
PHOENIX CLOSURES, 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.