Granted Patent
Utility
US 5,846,471 · App. 08/829,965
Method for manufacturing a tamper-evident closure
Inventors:
Paresh Thakor, Mark R. Fricke
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Apr 1, 1997
Inventors
Paresh Thakor
Mark R. Fricke
Assignee (at issue)
Kerr 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.