| All Patents in class 83/135 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 252,111 | Jan. 10, 1882 | C.E. McBeth, J.M. Long | Punching-machine | metal punching machines |
| 777,542 | Dec. 13, 1904 | W.T. Sears, J.V. Reynders | Stripper for punches | metal punching machines |
| 792,949 | Jun. 20, 1905 | L. Van Dorin | Punch and Shears | metal punching machines |
| 921,068 | May 11, 1909 | L.H. Bertsch, H. Schelhammer, C.A. Bertsch | Punching or Shearing Machine | metal punching machines |
| 2,287,689 | Jun. 23, 1942 | W.F. Longfield | Tie-plate punch | metal punching machines |
| 3,699,882 | Oct. 24, 1972 | H.E. Keithley, R.A. Helrigel | Knockout bar assembly for presses | metalworking presses |
