Granted Patent
Utility
US 4,534,586 · App. 06/454,158
Automatic locking device
Inventor:
Arnold R. Smith
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Dec 29, 1982
Inventor
Arnold R. Smith
Assignee (at issue)
AT&T Bell Laboratories
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.