Granted Patent
Utility
US 6,196,137 · App. 09/122,578
Well car structure
Inventor:
James W. Forbes
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Jul 24, 1998
Inventor
James W. Forbes
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.