| All Patents in class 407/30 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 5,894X | Mar. 30, 1830 | W.W. Southworth | Cutting screws and gimlets |
 | 5,894 | Oct. 31, 1848 | J. Johnson | Hand-drill |
 | 43,673 | Aug. 02, 1864 | R. Dudgeon | Drill |
| | 336,762 | Feb. 23, 1886 | O. Smith | Tool for drill presses |
| | 1,093,581 | Apr. 14, 1914 | A.J. Baker | Means Increasing Cutter Efficiency |
 | 1,662,638 | Mar. 13, 1928 | G.L. Curle | Slug Sawing Device |
| | 3,673,654 | Jul. 04, 1972 | F.G. Rick | Cutting Head for a Chamfering Tool |
 | 3,699,843 | Oct. 24, 1972 | A.N. Sweeny | Tool having resilient bumper |
