| All Patents in class 74/840 |
Patents 1 -
10
of 24
      |
| Picture | Number | Date | Patentee | Title |
 | 2,064X | Feb. 12, 1814 | D. Pettibone | Boring guns and pistols with twisted screw auger |
 | 9,441 | Dec. 07, 1852 | C.W. Coe | Drilling-machine |
 | 14,327 | Feb. 26, 1856 | J. Temple | Boring-machine |
 | 26,986 | Jan. 31, 1860 | F.H. Harwood | Mortising-machine |
 | 27,320 | Feb. 28, 1860 | G.C. Taft | Drill |
 | 42,011 | Mar. 22, 1864 | W. Morton | Improvement in Drilling Machines |
 | 46,123 | Jan. 31, 1865 | W. Lyon | Improvement in drilling-machines |
 | 111,532 | Feb. 07, 1871 | J.R. Group | Improvement in machines for boring posts |
| | 138,742 | May 13, 1873 | J. Eisenmann | Machines for Boring Hubs |
 | 146,885 | Jan. 27, 1874 | W.H. Doane, G.W. Bugbee | Improvement in boring machines |
