ExOne, a provider of 3D printing machines and printed products to industrial customers, filed on Tuesday with the SEC to raise up to $75 million in an initial public offering. The North Huntingdon, PA-based company, which was founded in 2003 and booked $19 million in sales for the 12 months ended 9/30/2012, plans to list on the NASDAQ under the symbol XONE. The company filed confidentially on November 13, 2012. FBR Capital Markets is the sole underwriter on the deal. No pricing terms were disclosed.