G.H. MUMM Turns Men into Gentlemen with Champagne Protocol iPhone App

NEW YORK, July 11, 2012 /PRNewswire/ -- In honor of France's upcoming Bastille Day on July 14, the historic champagne house G.H. MUMM has a must-read illustrated iPhone application on how to be true gentlemen with champagne. The brand's creative and service driven iPhone app, Champagne...

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