Granted Patent
Utility
US 6,821,239 · App. 10/290,727
Snap-hinge closure with tamper-evident lid and method of making
Inventors:
Valentin Hierzer, Rick Gaiser, Gordon Beth
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Nov 8, 2002
Inventors
Valentin Hierzer
Rick Gaiser
Gordon Beth
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.