Regular Post Written by MOCC 5 January 2018 Morriss O’Bryant Compagni Cannon obtains patent for Progress Mfg. Inc. Title: APPARATUS AND METHOD OF INSTALLING AN INTERNAL LOCKING RING TO REINFORCE AN ADJUSTABLE TRAILER HITCH Patent No.: 9,844,986 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