Granted Patent
Utility
US 6,116,451 · App. 09/229,923
Screw cap with anti-tamper strip
Inventors:
Klaus Herrmann, Michael Kirchgessner
Patented Case
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Granted: Sep 12, 2000
Filed: Jan 13, 1999
Inventors
Klaus Herrmann
Michael Kirchgessner
Assignee (at issue)
Crown Cork
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.