| All Patents in class 81/174 |
Patents 1 -
10
of 54
      |
| Picture | Number | Date | Patentee | Title |
 | 9,030X | Aug. 17, 1835 | S. Merrick | Improvement in screw wrench |
 | RX-38 | May 17, 1842 | S. Merrick | Improvement in the Screw Wrenches |
 | RE38 | May 17, 1842 | S. Merrick | Improvement in Screw Wrenches |
 | 5,707 | Aug. 15, 1848 | S. Merrick | Improved screw wrench |
 | RE207 | Nov. 25, 1851 | S. Merrick | Wrench |
 | 11,308 | Jul. 11, 1854 | J.C. Terry | Improved Screw-Wrench |
 | 23,751 | Apr. 26, 1859 | A.D. Briggs | Improvement in Screw-Wrenches |
 | 35,740 | Jun. 24, 1862 | G.B. Phillips | Improvements in Wrenches |
 | 55,739 | Jun. 19, 1866 | G.C. Taft | Improvement in Screw-Wrenches |
 | 56,731 | Jul. 31, 1866 | J.F. Dodge | Improvement in Wrenches |
