Granted Patent
Utility
US 4,677,917 · App. 06/701,880
High volume covered hopper car with loading from below and automatic unloading
Inventors:
Richard H. Dugge, Eugene J. Cordani
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Feb 14, 1985
Inventors
Richard H. Dugge
Eugene J. Cordani
Assignee (at issue)
ACF 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.