| All Patents in class 81/150 |
Patents 1 -
15
of 37
      |
| Number | Date | Patentee | Title | Type |
| 12,510 | Mar. 13, 1855 | J. Hyde | Improvement in Screw-Wrenches | quick adjust wrenches |
| 13,597 | Sep. 25, 1855 | H.J. Behrens | Improvement in Wrenches for Turning Screw-Nuts | quick adjust wrenches |
| 42,239 | Apr. 05, 1864 | A. Leigh, C.R. Thorn | Improved Screw-Wrench | ratchet wrenches |
| 56,147 | Jul. 03, 1866 | A.M. Olds | Improvement in Wrenches | quick adjust wrenches |
| 97,849 | Dec. 14, 1869 | S. Zarley | Improvement in Monkey-Wrench | nut wrenches |
| 109,913 | Dec. 06, 1870 | C. Knisely | Wrench | quick adjust wrenches |
| 114,179 | Apr. 25, 1871 | F.B. Morse | Improvement in Wrenches | quick adjust wrenches |
| 120,641 | Nov. 07, 1871 | I.S. Hamilton | Improvement in Pipe Wrenches | pipe wrenches |
| 139,174 | May 20, 1873 | F.H. Merrill | Improved Pipe Tongs | pipe tongs |
| 144,134 | Oct. 28, 1873 | L.B. Prindle | Improvement in wrenches | brace wrenches |
| 184,707 | Nov. 28, 1876 | J.T. Gilbert | Carriage-Wrench | axle nut wrenches |
| 184,827 | Nov. 28, 1876 | G.W. Bradley | Wrenches | quick adjust wrenches |
| 242,062 | May 24, 1881 | A.K. Sheppard | Monkey Wrench | quick adjust wrenches |
| 350,935 | Oct. 19, 1886 | J.G. Leslie | Wrench | quick adjust wrenches |
| 352,260 | Nov. 09, 1886 | W.H. Parsons, J.M. Parsons | Wrench | axle nut wrenches that lock nut to wheel hub |
