"S. Scott Crump is the inventor of fused deposition modeling (FDM) and co-founder of Stratasys, Ltd. Crump invented and patented FDM technology in 1989 with his wife and Stratasys co-founder Lisa Crump. He is currently the Chairman of the Board of Directors of Stratasys, which produces additive manufacturing machines for direct digital manufacturing (a.k.a. rapid manufacturing); these machines are popularly called \u201C3D printers.\u201D He took the manufacturing company public in 1994 (Nasdaq:SSYS)."@en . "American businessman" . "Crump, S. Scott"@en .