0001104659-05-011106 10-K 8 20041231 20050315 20050315 RUSH ENTERPRISES INC \TX\ 0001012019 5500 741733016 TX 1231 10-K 34 000-20797 05681536 555 IH 35 SOUTH NEW BRAUNFELS TX 78130 8306265200 555 IH 35 SOUTH NEW BRAUNFELS TX 78130 10-K 1 a05-1972_110k.htm 10-K EX-3.1 2 a05-1972_1ex3d1.htm EX-3.1 EX-21.1 3 a05-1972_1ex21d1.htm EX-21.1 EX-23.1 4 a05-1972_1ex23d1.htm EX-23.1 EX-31.1 5 a05-1972_1ex31d1.htm EX-31.1 EX-31.2 6 a05-1972_1ex31d2.htm EX-31.2 EX-32.1 7 a05-1972_1ex32d1.htm EX-32.1 EX-32.2 8 a05-1972_1ex32d2.htm EX-32.2