Granted Patent
Utility
US 5,581,978 · App. 08/434,943
Tamper evident closure
Inventors:
Ihab M. Hekal, Howard D. Iler, Bradley C. Kiss, Daniel P. Bialka
Patented Case
View Patent ↗
Granted: Dec 10, 1996
Filed: May 4, 1995
Inventors
Ihab M. Hekal
Howard D. Iler
Bradley C. Kiss
Daniel P. Bialka
Assignee (at issue)
Continental White Cap, Inc.
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.