| All Patents in class 81/168 |
Patents 1 -
15
of 25
      |
| Number | Date | Patentee | Title | Type |
| 1,301 | Aug. 24, 1839 | H.W. Hewet | Improved Screw-Wrench | nut wrenches |
| 6,210 | Mar. 20, 1849 | D.H. Chamberlain | Sliding Wrench | nut wrenches |
| 62,630 | Mar. 05, 1867 | S.B. Hill | Nut Wrench | screw adjust wrenches |
| 118,619 | Aug. 29, 1871 | J.W. Mahlon | Improvement in Wrenches | wrenches |
| 149,944 | Apr. 21, 1874 | W.W. Micks | Pipe-Wrenches and Cutters | pipe wrenches |
| 204,089 | May 21, 1878 | G.W. Remington | Adjustable Carriage-Wrench | axle nut wrenches |
| 230,634 | Aug. 03, 1880 | H.P. Huntoon | Pipe Tongs | pipe tongs |
| 263,471 | Aug. 29, 1882 | W.A. Bradford | Wrench | screw adjust wrenches |
| 355,641 | Jan. 04, 1887 | E.E. Scates, C.D. Cutts | Wrench | quick adjust wrenches |
| 357,869 | Feb. 15, 1887 | A.M. Spaulding, A.K. Spaulding | Nut Wrench | nut wrenches |
| 378,584 | Feb. 28, 1888 | L.W. Cromer, G. Gavin | Wrench | screw adjust wrenches |
| 441,347 | Nov. 25, 1890 | M.E. Worden | Improvements in Plumber's Tool-Stocks | combination tools |
| 442,190 | Dec. 09, 1890 | J.H. Lane | Wrench For Tightening the Spokes of Bicycle Wheels | spoke nipple wrenches |
| 582,201 | May 11, 1897 | E.E. Harris | Wrench | wedge adjust wrenches |
| 583,910 | Jun. 08, 1897 | G.J. Knapp | Auger-Handle | auger handles |
