Granted Patent
Utility
US 5,873,431 · App. 08/642,571
Articulated vehicle
Inventors:
Daniel N. Butler, George A. Fischer, Randall W. Welker
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: May 3, 1996
Inventors
Daniel N. Butler
George A. Fischer
Randall W. Welker
Assignee (at issue)
Joy MM Delaware, Inc.
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.