Granted Patent
Utility
US 6,085,921 · App. 09/032,542
Tamper evident band with undercut
Inventor:
Robert B. Brown
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Feb 26, 1998
Inventor
Robert B. Brown
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.