Granted Patent
Utility
US 4,998,989 · App. 07/529,342
Tamper evident closure and associated method
Inventor:
Yoram Curiel
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: May 25, 1990
Inventor
Yoram Curiel
Assignee (at issue)
TSL, Limited Company
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.