Granted Patent
Utility
US 5,305,486 · App. 08/080,539
Vehicle passenger boarding system
Inventors:
Ronald E. Smith, Miles H. Kennington
Patented Case
View Patent ↗
Granted: Apr 26, 1994
Filed: Jun 24, 1993
Inventors
Ronald E. Smith
Miles H. Kennington
Assignee (at issue)
Wheelers Manufacturing, 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.