Granted Patent
Utility
US 5,113,961 · App. 07/553,332
Tractor and trailer combination air cushioned vehicle
Inventor:
John R. Wyss
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Jul 17, 1990
Inventor
John R. Wyss
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.