Granted Patent
Utility
US 6,305,298 · App. 09/283,081
Light weight draft sill
Inventors:
Horst T. Kaufhold, Douglas L. Compton, Brian A. Toussaint, Ronald G. Butler, Jeffery R. Ladendorf
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Mar 31, 1999
Inventors
Horst T. Kaufhold
Douglas L. Compton
Brian A. Toussaint
Ronald G. Butler
Jeffery R. Ladendorf
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.