Granted Patent
Utility
US 4,593,830 · App. 06/697,007
Tamper-resistant container closure having auxiliary removal features
Inventor:
Joseph J. Bullock, III
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Jan 31, 1985
Inventor
Joseph J. Bullock, III
Assignee (at issue)
Bankers Trust 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.