| All Patents in class 81/137 |
Patents 31 -
40
of 40
      |
| Number | Date | Patentee | Title | Type |
| 589,166 | Aug. 31, 1897 | F.F. De Voe | Quick Action Wrench | quick adjust wrenches |
| 592,162 | Oct. 19, 1897 | H.H. McKelvey | Wrench | quick adjust wrenches |
| 595,638 | Dec. 14, 1897 | M.M. Le May | Wrench | quick adjust wrenches |
| 596,777 | Jan. 04, 1898 | A. Hopkins | Nut Wrench | nut wrenches |
| 608,767 | Aug. 09, 1898 | G.H. Dugan, L. Frederick | Wrench | quick adjust wrenches |
| 608,942 | Aug. 09, 1898 | H.A. Gleason, G.H. Wells | Wrench | quick adjust wrenches |
| 639,369 | Dec. 19, 1899 | J.H. Flanigan | Wrench | quick adjust wrenches |
| 1,040,092 | Oct. 01, 1912 | W.C. Adams | Wrench | quick adjust wrenches |
| 1,334,156 | Mar. 16, 1920 | O. Becklin, J.H. Lagreid | Wrench | quick adjust wrenches |
| 1,437,774 | Dec. 05, 1922 | E.K. Boinski, J.C. Piechocki | Wrench | quick adjust wrenches |
