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| All Patents in class 81/454 | |||||
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| 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 | |
| 953,434 | Mar. 29, 1910 | R.J. Northam | Tool Holder | tool holders | |