| All Patents in class 81/DIG.6 |
Patents 1 -
15
of 39
      |
| Number | Date | Patentee | Title | Type |
| 121,372 | Nov. 28, 1871 | H.A. Hyle | Improvement in Wrenches | pipe wrenches |
| 132,057 | Oct. 08, 1872 | O.W. Cutler, T. Cooper | Improvement in Adjustable Slide-Wrenches | quick adjust wrenches |
| 153,544 | Jul. 28, 1874 | H. Cutler | Improvement in Carriage-Wrenches | axle nut wrenches |
| 256,867 | Apr. 25, 1882 | J. Thomson | Improved Monkey Wrench | quick adjust wrenches |
| 268,784 | Dec. 12, 1882 | B. Donohue | Wrench | wrench jaw components |
| 284,933 | Sep. 11, 1883 | G.W. Wilbur | Pipe Tongs | pipe tongs |
| 291,266 | Jan. 01, 1884 | N.W. Vandegrift, F. Armstrong | Pipe Wrench | pipe wrenches |
| 322,256 | Jul. 14, 1885 | T.J. Campbell | Wrench | pipe wrenches |
| 331,456 | Dec. 01, 1885 | H.F. Sohst | Pipe Tongs | pipe tongs |
| 341,815 | May 11, 1886 | H. Newton | Pipe Wrench | self-adjust wrenches |
| 380,735 | Apr. 10, 1888 | W.L. Tobey | Wrench | quick adjust wrenches |
| 419,270 | Jan. 14, 1890 | A.A. Low | Improvements in Implements For Imparting Rotary Motion | pliers |
| 419,854 | Jan. 21, 1890 | D.J. Hersey | Pipe Wrench | pipe wrenches |
| 426,223 | Apr. 22, 1890 | F. Virgien | Pipe Wrench | pipe wrenches |
| 431,236 | Jul. 01, 1890 | R.W. Smith | Monkey Wrench | nut wrenches |
