Granted Patent
Utility
US 6,357,628 · App. 08/927,743
Tamper evident plastic closure
Inventor:
Charles J. Long, Jr.
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Sep 11, 1997
Inventor
Charles J. Long, Jr.
Assignee (at issue)
International Plastics and Equipment Corp.
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.