| All Patents in class 408/138 |
Patents 1 -
10
of 27
      |
| Picture | Number | Date | Patentee | Title |
 | 9,271 | Sep. 21, 1852 | R. Daniels | Hand drilling machine |
 | 86,006 | Jan. 19, 1869 | F.W. Dexter | Improvement in hub-boring machine |
 | 101,466 | Apr. 05, 1870 | J.E. Hunter | Improved hand drilling-machine |
 | 120,716 | Nov. 07, 1871 | G.F. Cluff | Improvement in boring-machines |
| | 141,299 | Jul. 29, 1873 | C.C. Walworth | Screw Cutting Machines |
| | 145,521 | Dec. 16, 1873 | J.A. Newell | Machines for Boring Hubs |
 | 157,373 | Dec. 01, 1874 | J.C. Chapman | Improvement in hand drilling-machines |
 | 193,618 | Jul. 31, 1877 | R.G. Rowe, I.B. Edington | Improvement in hub-boring machines |
 | 232,146 | Sep. 14, 1880 | H.W. Ransom | Hub-boring machine |
 | 253,996 | Feb. 21, 1882 | W.D. Forbes | Screw-cutting die |
