Granted Patent
Utility
US 4,420,092 · App. 06/413,623
Tamper-resistant pharmaceutical vial and cap assembly
Inventor:
Sam D. Finkelstein
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Sep 1, 1982
Inventor
Sam D. Finkelstein
Assignee (at issue)
M.P.L. Limited
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.