| All Patents in class 81/106 |
Patents 31 -
45
of 72
      |
| Number | Date | Patentee | Title | Type |
| 448,619 | Mar. 17, 1891 | C.F. West | Pipe Wrench | pipe wrenches |
| 461,894 | Oct. 27, 1891 | E. Cook | Pipe Wrench | pipe wrenches |
| 468,601 | Feb. 09, 1892 | G.W. Gorsuch | Pipe Wrench and Cutter | pipe wrenches |
| 471,471 | Mar. 22, 1892 | A.L. Engelbach | Pipe Wrench | pipe wrenches |
| 489,875 | Jan. 10, 1893 | C.C. Reynolds | Combination Tool | combination tools |
| 494,310 | Mar. 28, 1893 | J. Wenning | Combined Pipe Wrench, Monkey Wrench and Flange Holder | pipe and nut combination wrenches |
| 501,985 | Jul. 25, 1893 | P. Armantrout | Pipe or Nut Wrench | pipe and nut combination wrenches |
| 504,305 | Aug. 29, 1893 | W.C. Lawrence | Wrench | screw adjust wrenches |
| 509,909 | Dec. 05, 1893 | W.A. Jennings | Pipe Wrench | pipe wrenches |
| 525,320 | Aug. 28, 1894 | H.M. Glines | Pipe Or Nut Wrench | quick adjust wrenches |
| 529,624 | Nov. 20, 1894 | W.C. Lawrence | Wrench | pipe wrenches |
| 539,031 | May 14, 1895 | W.F. Born | Pipe Wrench | screw adjust wrenches |
| 542,592 | Jul. 09, 1895 | E.I. Morey | Improvement in Pipe-wrenches | pipe wrenches |
| 554,157 | Feb. 04, 1896 | J.M. Watson | Wrench | pipe wrenches |
| 560,220 | May 19, 1896 | K.A. Klose | Pipe Wrench | pipe wrenches |
