| Patents for W. S. Duvall |
Patents 1 -
15
of 42
      |
| Number | Date | Patentee | Title | Type |
| 348,565 | Sep. 07, 1886 | I.J. Mandeville | Combination Tool | combination tools |
| 368,854 | Aug. 23, 1887 | G.H. Russell | Fenced Butt Gage | butt gauges |
| 416,154 | Dec. 03, 1889 | P. Cosette | Nut Wrench | ratchet wrenches |
| 417,652 | Dec. 17, 1889 | J.R. Smith | Pipe Wrench | pipe wrenches |
| 421,062 | Feb. 11, 1890 | H. Zuber | Rod or Pipe Wrench | pipe wrenches |
| 423,483 | Mar. 18, 1890 | J. Lepley | Wrench | axle nut wrenches that lock nut to wheel hub |
| 426,161 | Apr. 22, 1890 | C.C. Augustine | Wrench | nut wrenches |
| 429,676 | Jun. 10, 1890 | W. Cann | Pipe Wrench | pipe tongs |
| 430,656 | Jun. 24, 1890 | E.E. King | Combination Nut and Pipe Wrench | pipe and nut combination wrenches |
| 431,641 | Jul. 08, 1890 | M. Beach | Hub Wrench | axle nut wrenches that lock nut to wheel hub |
| 433,928 | Aug. 12, 1890 | J.W. Bess | Wrench Tightener | wrench handle components |
| 441,854 | Dec. 02, 1890 | F.E. Putnam | Wrench | brace wrenches |
| 444,450 | Jan. 13, 1891 | H. Marshall | Wrench | quick adjust wrenches |
| 447,952 | Mar. 10, 1891 | T.D. Keith | Wrench | self-adjust wrenches |
| 449,793 | Apr. 07, 1891 | C.A. Driver | Improvements in Ratchet Drills or Wrenches | ratchet wrenches |
