Granted Patent
Utility
US 6,502,437 · App. 10/206,676
Column lock device
Inventor:
Robert A. Vito
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jul 26, 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.