Regular Post Written by MOCC 13 March 2018 Morriss O’Bryant Compagni Cannon obtains patent for Burrell Mining Products, Inc. Title: VENTILATED MINE ROOF SUPPORT Patent No.: 9,903,203 Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window) Related Issued Patents 0