Granted Patent
Utility
US 5,509,671 · App. 08/410,103
Cart for carrying spools of wire
Inventor:
William F. Campbell
Patented Case
View Patent ↗
Granted: Apr 23, 1996
Filed: Mar 24, 1995
Inventor
William F. Campbell
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.