I don't believe it was ever called the 1906 'pattern' U.S.issue cavalry saber - just the 1906 U.S. Cavalry saber. However, the British did issue a 1908 Pattern Cavalry Trooper's sword that the 1913 Patton U.S. Cavalry sword was modeled after. My father was in the 8th and 3rd U.S. Cavalry from 1929 to 1942 when they retired all the horses and went mechanized. He told me that although the Patton sword (saber is a misnomer because it had a straight blade) was issued to U.S. Cavalry troopers, it was not accepted by many if not most field grade and general U.S. Cavalry officers because the curved blade was and always will be the preferred horse cavalry saber. Although he went on to greater glory, George Patton was only a lieutenant at the time he invented his sword, and the old school cavalrymen did not think much of a lieutenant changing tradition. My father said he had a Patton saber but trained with and carried the 1906 U.S. Cavalry saber.