Granted Patent
Utility
US 4,474,042 · App. 06/310,648
Multistation lock
Inventor:
George P. Patriquin
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Oct 13, 1981
Inventor
George P. Patriquin
Assignee (at issue)
Three Point Products, 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.