| All Patents in class 408/106 |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
 | 6,941 | Dec. 11, 1849 | I. Munden | Machine for Preparing Hubs for Boxes |
 | 11,364 | Jul. 25, 1854 | L.A. Dole | Self-centering hub-boring machine |
| | 31,257 | Jan. 29, 1861 | N.F. Newell | Centering Bars of Iron |
| | 60,936 | Jan. 01, 1867 | N. Puckett | Centering Tool |
 | 80,837 | Aug. 11, 1868 | A.R. Silver | Improvement in hub-boring machines |
 | 145,894 | Dec. 23, 1873 | W.S. Owen | Hub-Boring Machines |
| | 166,538 | Aug. 10, 1875 | J.R. Mason | Chucks and Centerers |
 | 259,447 | Jun. 13, 1882 | W.R. Wood, S. Barr | Machine for boring axle-holes in hubs, &c. |
| | 407,413 | Jul. 23, 1889 | D. Rosser, T. McFassen | Pipe Thread Cutting Machine |
| | 434,424 | Aug. 19, 1890 | A.W. Cash | Pipe Threading and Cutting Off Machine |
