| All Patents in class 81/181 |
Patents 31 -
45
of 53
      |
| Number | Date | Patentee | Title | Type |
| 350,199 | Oct. 05, 1886 | H. Hubler | Improvement in Pipe-Tongs and Cutters | pipe tongs |
| 367,703 | Aug. 02, 1887 | L.P. Croswell | Wrench | pipe jaw attachments for wrenches |
| 392,183 | Nov. 06, 1888 | J.A. Chapman | Wrench and Bolt Cutter | tire bolt wrenches |
| 396,877 | Jan. 29, 1889 | C.H. Kennedy | Wrench | screw adjust wrenches |
| 439,071 | Oct. 21, 1890 | W.H. Huston | Combined Nut Wrench and Tool | wrench combination tools |
| 469,580 | Feb. 23, 1892 | M. Martin | Combined Wheel Wrench and Bolt Clipper | tire bolt wrenches |
| 478,121 | Jul. 05, 1892 | W.S. Duvall, W. Miller | Wrench | pipe wrenches |
| 483,461 | Sep. 27, 1892 | J.A. Litel | Wrench | combination tools |
| 485,657 | Nov. 08, 1892 | O.E. Reichling | Wrench | self-adjust wrenches |
| 490,789 | Jan. 31, 1893 | W.H. Huston | Combination Wrench | combination tools |
| 510,981 | Dec. 19, 1893 | G. Massey | Improved Combination Spanner and Locking Tool For Nuts and Bolts | wrenches |
| 515,498 | Feb. 27, 1894 | H. Mork | Universal Tool | combination tools |
| 519,550 | May 08, 1894 | J.A. Riordan | Combination Tool For Carriages | combination tools |
| 533,426 | Feb. 05, 1895 | P. Bartzen | Pipe Wrench And Cutter | |
| 595,289 | Dec. 14, 1897 | W. Devaun | Combination Wrench | combination tools |
