Granted Patent
Utility
US 4,498,618 · App. 06/522,575
Lock arrangement between two carton closure panels
Inventor:
Robert L. Sutherland
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Aug 12, 1983
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.