| All Patents in class 279/39 |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
 | 20,711 | Jun. 29, 1858 | T.R. Hopkins | Ring Clamp for Engravers |
 | 22,635 | Jan. 18, 1859 | W.W. Draper | File-handle |
 | RE4,333 | Apr. 11, 1871 | W.W. Draper | Improvement in tool-holders |
 | 131,829 | Oct. 01, 1872 | H.L. Pratt | Improvement in bit-stocks |
 | 149,306 | Apr. 07, 1874 | H.C. Hart | Bit-stock |
 | 150,046 | Apr. 21, 1874 | G.W. Hutchins | Improvement in Shoemakers' Awl-Hafts |
 | RE8,525 | Dec. 17, 1878 | H.L. Pratt | Improvement in bit-stocks |
 | 310,960 | Jan. 20, 1885 | J.L. Phillips | Wrench |
| | 323,989 | Aug. 11, 1885 | W.S. Washburn | Bit-stock |
 | 331,053 | Nov. 24, 1885 | N.H. Griffith | Wrench |
