FORT COLLINS, Colorado, June 25, 2004 - Wohlers Associates, Inc., in cooperation with industry analyst Joe Greco, has announced that 4.96 million mechanical CAD (MCAD) seats were installed worldwide through the end of 2003. This total includes both commercial and educational seats. The leading MCAD product family in cumulative commercial installations, according to the study, is Pro/ENGINEER, followed by CATIA, Unigraphics (including IDEAS), Mechanical Desktop, Inventor, SolidWorks, and Solid Edge. Among the MCAD products not counted were Alibre, KeyCreator (formerly CADKEY), OneSpace Designer, IronCAD, thinkdesign, VX CAD/CAM, and Cobalt (formally Vellum Solids).