Granted Patent
Utility
US 4,611,754 · App. 06/726,984
Modified lock arrangement for cartons
Inventor:
Robert L. Sutherland
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Apr 25, 1985
Inventor
Robert L. Sutherland
Assignee (at issue)
Federal Paper Board Co., 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.