====== Patent XC-3300: 1869-06-28, Improvement in the construction and use of railroad car wheels and crossings ====== ^ X Number ^ Date ^ Inventor ^ City ^ Title ^ | XC-3300 | 1869-06-28 | L. Davidson | Brantford, ON Canada | Improvement in the construction and use of railroad car wheels and crossings | ===== Comments ===== XC patents are Canadian patents issued between 1824 and 1869. ===== Information Sources ===== (To be filled in.) ===== External links =====