Granted Patent
Utility
US 5,393,192 · App. 08/136,655
Underfloor extendible ramp for vehicles
Inventors:
John C. Hall, Paul F. Risner
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Oct 1, 1993
Inventors
John C. Hall
Paul F. Risner
Assignee (at issue)
REB Manufacturing Co., Inc.
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.