| All Patents in class 81/454 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 108,383 | Oct. 18, 1870 | A. Newton | Screw holding screwdriver | screwdriver blades |
| 302,067 | Jul. 15, 1884 | A.D. Wallen | Screw holding screwdriver | screwdriver blades |
| 303,003 | Aug. 05, 1884 | G.W. Hael | Screw holding screwdriver | screwdriver blades |
| 306,394 | Oct. 14, 1884 | G.W. Hael | Screw holding screwdriver | screwdriver blades |
| 703,638 | Jul. 01, 1902 | J.K. Gunn, J.D. Cambell | Screw holding screwdriver | screwdriver blades |
| 953,434 | Mar. 29, 1910 | R.J. Northam | Tool Holder | tool holders |
