Granted Patent
Utility
US 6,431,085 · App. 09/747,758
Center beam car with depressed cargo-carrying area
Inventors:
Gregory J. Saxton, John N. Niosi, Michael D. Hubbard, Daniel Militaru, Kris Heitmeyer
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Dec 20, 2000
Inventors
Gregory J. Saxton
John N. Niosi
Michael D. Hubbard
Daniel Militaru
Kris Heitmeyer
Assignee (at issue)
Gunderson LLC
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.