Granted Patent
Utility
US 4,503,779 · App. 06/352,232
Interconnecting passage for articulated vehicle
Inventor:
Dennis P. Chadwick
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Feb 25, 1982
Inventor
Dennis P. Chadwick
Assignee (at issue)
Urban Transportation Development Corp., Ltd.
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.