Happy St. Patrick’s Day Posted on March 17, 2022 by bwheelock Patents to celebrate the day: U.S. Patent No. D505846 on a Shamrock Shaped Bottle Opener U.S. Patent D2348 on A a Feniun Collar U.S. Patent No. D5777 on a (C.T.A. U. of A.) Badge decorated with “two sprigs of shamrock”