| All Patents in class 411/919 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 74,490 | Feb. 18, 1868 | J.A. Bidwell | Screwdriver and Countersink | screwdriver blades |
| 101,207 | Mar. 29, 1870 | A.S. Apgar | Improvement in Screw and Screw-Driver | screwdriver blades |
| 161,390 | Mar. 30, 1875 | A. Cummings | Improvement in wood-screws | |
| 173,356 | Feb. 08, 1876 | T.J. Sloan | Improvement in Screw-Drivers | screwdriver blades |
| 215,836 | May 27, 1879 | G.W. Rhines | Improvement in Lock-Nuts | auxiliary wrenches |
| 370,255 | Sep. 20, 1887 | D.R. Hart | Screw Driver | screwdriver blades |
| 417,722 | Dec. 24, 1889 | D.R. Hart | Screw Driver | screwdriver blades |
| 462,252 | Nov. 03, 1891 | H.L. Gillette | Headless or Trim Screwdriver | screwdrivers |
| 544,606 | Aug. 13, 1895 | J.R. Balsley | Screw Holder and Driver | screwdriver blades |
| 588,438 | Aug. 17, 1897 | R. Whitaker, J.W. Johnson | Wrench | alligator wrenches |
| 671,789 | Apr. 09, 1901 | C. Borgeson | Wrench | socket wrenches |
| 960,244 | Jun. 07, 1910 | W.G. Allen | Manufacture of Screws | |
| 975,285 | Nov. 08, 1910 | P.L. Robertson | Screw | |
| 1,380,562 | Jun. 07, 1921 | M. Keating | Valve Plug Remover | |
| 1,741,349 | Dec. 31, 1929 | R.R. Sullivan | Improvement in Screwdriver blades | screwdriver blades |
