Granted Patent
Utility
US 5,542,811 · App. 08/368,416
Wheelchair lift with laterally displaceable support post for vertical and rotational displacement
Inventor:
Roger Vartanian
Patented Case
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Granted: Aug 6, 1996
Filed: Jan 4, 1995
Inventor
Roger Vartanian
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.