| All Patents in class 408/236 |
Patents 1 -
10
of 98
      |
| Picture | Number | Date | Patentee | Title |
 | RE3,574 | Aug. 03, 1869 | G.F. Rice | Improvement in boring-machine |
 | 97,908 | Dec. 14, 1869 | G.A. Gray, Jr. | Improved radial drilling-machine |
 | 103,157 | May 17, 1870 | J. Deming | Improvement in Spoke-Tenoning and Hub-Boring Machines |
 | 110,530 | Dec. 27, 1870 | E.J. Worcester | Improvement in boring-machines |
 | 140,925 | Jul. 15, 1873 | J.C. Keller | Improvement in metal-drilling machines |
 | 142,416 | Sep. 02, 1873 | J.J. Sheridan | Improvement in Boring and Drilling Machine |
 | 157,373 | Dec. 01, 1874 | J.C. Chapman | Improvement in hand drilling-machines |
 | 207,640 | Sep. 03, 1878 | W.F. Barnes, J. Barnes | Improvement in scroll-sawing machines |
 | 301,984 | Jul. 15, 1884 | H.D. Heiser | Wood-boring machine |
 | 362,618 | May 10, 1887 | A. Gordon | Drilling-machine |
