Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine

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Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C27/02, E21C27/10, E21C27/18) > Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine