Granted Patent
Utility
US 6,203,031 · App. 09/206,624
File cabinet dolly with open frame
Inventor:
James M Leverington
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Dec 7, 1998
Inventor
James M Leverington
Assignee (at issue)
The Steelworks Corporation
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.