From Maxwell-Chalmers, Mason went to Copeland Products of Detroit in 1926 before becoming the President of the Kelvinator Corporation, a leader in the emerging electric refrigeration industry.
Von Maxwell-Chalmers wechselte Mason 1926 zu Copeland Products in Detroit, bevor er Präsident der Kelvinator Corporation, eines führenden Herstellers elektrischer Kühlschränke, wurde.