Granted Patent
Utility
US 6,543,263 · App. 10/228,687
Column lock device
Inventor:
Robert A. Vito
Patented Case
View Patent ↗
Granted: Apr 8, 2003
Filed: Aug 27, 2002
Inventor
Robert A. Vito
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.