Granted Patent
Utility
US 6,698,997 · App. 10/078,943
Dump truck with removable/extendable conveyor and spreader
Inventors:
John Arne, George Bailey
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Feb 19, 2002
Inventors
John Arne
George Bailey
Assignee (at issue)
The Louise Berkman Company
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.