Granted Patent
Utility
US 4,449,640 · App. 06/533,329
Tamper-resistant pharmaceutical vial and cap assembly
Inventor:
Sam D. Finkelstein
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Sep 19, 1983
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.