by PDF to DXF Aide PDF to DXF is a powerful windows program that will help you convert your PDF files to usable and editable DXF files quickly and easily. You can import DXF files into AutoCAD and save them as DWG format.
by AutoDWG PDF to DWG Converter ,a stand alone application help you convert pdf to dwg, pdf to dxf. It supports autocad version 2.5 to the lastest version 2006