| http://www.w3.org/ns/prov#value | - In a machine for automatically stacking a core in a conductive winding having a window, a base member, a magazine for a group of core punchings of one shape mounted on said base member, a second magazine for a group of core punchings of a different shape mounted on said base member, automatic means for stacking said punchings into a core at an assembly station, said means including apparatus for a
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