| All Patents in class 81/180.1 |
Patents 31 -
45
of 66
      |
| Number | Date | Patentee | Title | Type |
| 444,779 | Jan. 13, 1891 | C.V. Greenamyer | Adjustable Pipe Wrench | pipe and chain vises |
| 451,023 | Apr. 28, 1891 | J.H. Brown | Wrench | screw adjust wrenches |
| 457,064 | Aug. 04, 1891 | E.M. Watson | Pipe Wrench | pipe tongs |
| 476,841 | Jun. 14, 1892 | J.J. Tomey | Wrench | quick adjust wrenches |
| 481,749 | Aug. 30, 1892 | J.A. Corey | Carriage Wrench | axle nut wrenches |
| 485,657 | Nov. 08, 1892 | O.E. Reichling | Wrench | self-adjust wrenches |
| 496,168 | Apr. 25, 1893 | H. Port | Vise | bench vises |
| 497,797 | May 23, 1893 | R.C. Jones | Pipe Tongs | pipe tongs |
| 509,252 | Nov. 21, 1893 | A. Shepard | Wrench | wrench handle components |
| 514,752 | Feb. 13, 1894 | E.A. Humphrey | Wrench | pipe and nut combination wrenches |
| 522,471 | Jul. 03, 1894 | J. Kohler | Combination Tool For Pipe Fitting | pipe tongs |
| 527,643 | Oct. 16, 1894 | A.L. Winge | Wrench | quick adjust wrenches |
| 533,295 | Jan. 29, 1895 | C. Hall | Pipe Wrench | wrench jaw components |
| 534,449 | Feb. 19, 1895 | J.N. Parker | Combination-tool | wrench combination tools |
| 551,232 | Dec. 10, 1895 | J.E. Reese | Wrench | quick adjust wrenches |
