| Patents for W. S. Duvall |
Patents 16 -
30
of 42
      |
| Number | Date | Patentee | Title | Type |
| 452,907 | May 26, 1891 | O. Gustafson, E. Ohnstrano | Wrench | quick adjust wrenches |
| 453,736 | Jun. 09, 1891 | M. Cummins | Rod or Pipe Wrench | pipe wrenches |
| 454,678 | Jun. 23, 1891 | M. Cummins | Wrench | quick adjust wrenches |
| 456,265 | Jul. 21, 1891 | S. Boothroyd | Wrench | wrench jaw components |
| 457,050 | Aug. 04, 1891 | D.A. Kershner | Wrench | wedge adjust wrenches |
| 457,107 | Aug. 04, 1891 | C.W. Cheney | Wrench | screw adjust wrenches |
| 458,337 | Aug. 25, 1891 | G.T. Dodge, O.L. Dodge | Wrench | wrenches |
| 459,643 | Sep. 15, 1891 | W. Montgomery | Hammer | combination tools |
| 459,733 | Sep. 22, 1891 | E.J. Barber | Wrench | alligator wrenches |
| 460,015 | Sep. 22, 1891 | G.W. Johnson | Pipe Tongs | pipe tongs |
| 460,591 | Oct. 06, 1891 | E. Murphy | Pipe Wrench | pipe wrenches |
| 461,771 | Oct. 20, 1891 | J.O. Cottrell | Wrench | ratchet wrenches |
| 462,421 | Nov. 03, 1891 | S.J. Wever | Wrench | quick adjust wrenches |
| 464,088 | Dec. 01, 1891 | P. Steves | Fuse Tool | pliers |
| 465,542 | Dec. 22, 1891 | J.E. Shell | Wrench | brace wrenches |
