| All Patents in class 403/342 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 143,473 | Oct. 07, 1873 | M. Stephens | Improvement in machines for punching sheet metal | metal punching machines |
| 287,809 | Nov. 06, 1883 | W. Devereux | Screw-Driver | screwdriver mechanisms |
| 717,199 | Dec. 30, 1902 | G.H. Hollm | Tapping Fixture | tap and die holders |
| 1,126,176 | Jan. 26, 1915 | E.M. De Long, C.E. Baker | Take-Up for Flexible Connections | industrial machine mechanisms |
| 2,449,284 | Sep. 14, 1948 | E.A. Dorman | Machine tool adapter | drill press accessories |
| 2,689,131 | Sep. 14, 1954 | D.E. Priest | Screwdriver with removable blade | screwdriver blades |
