| All Patents in class 411/402 |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
 | 30,678 | Nov. 20, 1860 | B. Holly | Hose Coupling Nut |
| | 135,388 | Jan. 28, 1873 | T.M. Tucker | Casting Centers on Cast Iron Screws |
 | 370,255 | Sep. 20, 1887 | D.R. Hart | Screw Driver |
 | 417,722 | Dec. 24, 1889 | D.R. Hart | Screw Driver |
 | 462,252 | Nov. 03, 1891 | H.L. Gillette | Headless or Trim Screwdriver |
 | 588,438 | Aug. 17, 1897 | R. Whitaker, J.W. Johnson | Wrench |
 | 1,380,562 | Jun. 07, 1921 | M. Keating | Valve Plug Remover |
 | 2,016,088 | Oct. 01, 1935 | J.M. Hargrave | c clamp |
 | 2,103,944 | Dec. 28, 1937 | A.V. Gullborg | Screw Part and Driver |
| | 3,584,667 | Jun. 15, 1971 | B.F. Reiland | Torx screws and screwdriver |
