(under subclass 38) Apparatus specially adapted for applying a fastener in the form of a thin integral toothed strip made of metallic material designed to be temporarily deformed for insertion through the fastener receiving hole of the sheets(*), signatures(*), or quires(*).
SEE OR SEARCH CLASS
140, Wireworking,
92.3+, for apparatus for interlacing a rotated helix with marginal perforations of a plurality of sheets.