| All Patents in class 81/100 |
Patents 16 -
30
of 65
      |
| Number | Date | Patentee | Title | Type |
| 421,062 | Feb. 11, 1890 | H. Zuber | Rod or Pipe Wrench | pipe wrenches |
| 422,526 | Mar. 04, 1890 | F.E. Heinig | Wrench | jar wrenches |
| 426,956 | Apr. 29, 1890 | D.R. Porter | Improved Pipe Wrench | pipe wrenches |
| 432,409 | Jul. 15, 1890 | J. Hull | Wrench | quick adjust wrenches |
| 443,312 | Dec. 23, 1890 | P.J. Bode | Pipe Tongs | pipe wrenches |
| 444,777 | Jan. 13, 1891 | C.V. Greenamyer | Pivoted Jaw Wrench | pipe wrenches |
| 444,779 | Jan. 13, 1891 | C.V. Greenamyer | Adjustable Pipe Wrench | pipe and chain vises |
| 447,377 | Mar. 03, 1891 | D.P. Stanton | Pipe Wrench | pipe wrenches |
| 447,379 | Mar. 03, 1891 | J.H. Stiles | Wrench | wrench adjustment types |
| 450,651 | Apr. 21, 1891 | D.E. Van Horn | Wrench | pipe wrenches |
| 459,377 | Sep. 08, 1891 | J.G. Lind | Combined Wrench and Gas Pipe Tongs | pipe wrenches |
| 471,078 | Mar. 15, 1892 | J. Landwehr | Pipe Wrench | pipe wrenches |
| 484,307 | Oct. 11, 1892 | W.S. Duvall, C.C. Fields | Wrench | quick adjust wrenches |
| 501,985 | Jul. 25, 1893 | P. Armantrout | Pipe or Nut Wrench | pipe and nut combination wrenches |
| 502,869 | Aug. 08, 1893 | W.E. Badger | Monkey Wrench | screw adjust wrenches |
