| All Patents in class 81/DIG.4 |
Patents 16 -
27
of 27
      |
| Number | Date | Patentee | Title | Type |
| 630,421 | Aug. 08, 1899 | F.W. Stewart | Wrench | quick adjust wrenches |
| 632,051 | Aug. 29, 1899 | F. Hoerens | Wrench | pipe and nut combination wrenches |
| 636,673 | Nov. 07, 1899 | R. Klatt | Wrench | quick adjust wrenches |
| 640,831 | Jan. 09, 1900 | C.H. Tebbetts | Monkey Wrench | quick adjust wrenches |
| 680,866 | Aug. 20, 1901 | A. Katzki | Pipe Cutter | pipe cutters |
| 781,963 | Feb. 07, 1905 | R.N. Miller | Wrench | quick adjust wrenches |
| 799,194 | Sep. 12, 1905 | W.A. Schenk | Pipe Cutter, etc. | quick adjust wrenches |
| 867,272 | Oct. 01, 1907 | C.T. Holman | Wrench | quick adjust wrenches |
| 873,868 | Dec. 17, 1907 | E.R. Klemm | Wrench | axle nut wrenches |
| 1,092,695 | Apr. 07, 1914 | I. Cunningham, H. Flowers | Wrench | quick adjust wrenches |
| 1,167,275 | Jan. 04, 1916 | I. Cunningham | Wrench | quick adjust wrenches |
| 1,403,334 | Jan. 10, 1922 | C.A. McIlvaine | Wrench | wedge adjust wrenches |
