Granted Patent
Utility
US 4,711,505 · App. 07/011,888
Locking system
Inventor:
Matthew L. Lakso
Patented Case
View Patent ↗
Granted: Dec 8, 1987
Filed: Feb 6, 1987
Inventor
Matthew L. Lakso
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.