| All Patents in class 81/156 |
Patents 1 -
10
of 33
      |
| Picture | Number | Date | Patentee | Title |
 | AI125 | Jul. 17, 1855 | L.D. Gilman | Screw-Wrench |
 | 63,935 | Apr. 16, 1867 | J.A. Partridge | Improvement in Wrenches |
 | 86,534 | Feb. 02, 1869 | C. Hall | Improvement in Screw-Wrench |
 | 102,058 | Apr. 19, 1870 | O.J. Smith | Wrench |
 | 105,604 | Jul. 19, 1870 | O.J. Smith | Wrench |
 | 149,840 | Apr. 21, 1874 | W.H. Crittendon | Wrenches |
 | 170,860 | Dec. 07, 1875 | B.F. Joslyn | Wrench |
 | 174,909 | Mar. 21, 1876 | A.T. Hyde | Improvement in Wrenches |
 | 180,348 | Jul. 25, 1876 | B.F. Joslyn | Wrench |
 | 190,636 | May 08, 1877 | L.S. Starrett | Wrench |
