Granted Patent
Utility
US 4,233,909 · App. 05/890,984
Railway car assembly composed of a series of articulately interconnected cars
Inventors:
Michael B. Adams, John A. Angold, Robert Morrison, Robert E. Zimmerman
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Mar 28, 1978
Inventors
Michael B. Adams
John A. Angold
Robert Morrison
Robert E. Zimmerman
Assignee (at issue)
ITEL 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.