As a result of this relentless dedication toward progress, Georges Leblanc and his son, Leon, set up their Paris workshop as the first full-time acoustical research laboratory for wind instruments. Soon, in the s, due to an ever-growing school market, demand for Leblanc instruments in the Clarinet Dating noblet States was far greater than the French concern could meet, so Leblanc began producing plastic-bodied clarinets in Kenosha. And band directors were assured that the instruments their students played would possess a harmonious timbre, have correct intonation and be free of mechanical deficiencies. On January 1,Leblanc was granted for Objectives individual instruction accomadating exclusive rights to market Yanagisawa artist saxophones in the United States and Canada. After shipment to America by sea and later by airthe wood was allowed to stabilize under the new atmospheric conditions, and the instruments were restored to original factory specifications, reassembled, adjusted and thoroughly tested. The subsequent growth and success of G. Perhaps even more significant, the Leblanc firm was the first clarinet Dating noblet maker in history to manufacture clarinet Dating noblet with interchangeable keys, resulting in instruments that were easier to play in tune by artists as well as beginners. Together, Georges, Leon and Houvenaghel pushed the theoretical limits of instrument design to produce the first truly playable complete clarinet choir, ranging from sopranino to octo-contrabass, encompassing a range that surpasses that of the orchestral string clarinet Dating noblet.