The Board of Directors of 3M declared a dividend on the company’s common stock of 85.5 cents per share for the third quarter of 2014, payable Sept. 12, 2014, to shareholders of record at the close of business on Aug. 22, 2014. 3M has paid dividends to its shareholders without interruption for 98 years.   As of June 30, 2014, 3M had 647,969,147 common shares outstanding and 89,560 shareholders of record....