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Zipper
"Devices consisting of two opposite series of members adapted to be attached
one on each side of an aperture in some article and to interlock so as to close
the aperture upon the slide being operated in one direction, or to separate so
as to leave the aperture open upon the slide being operated in the opposite
direction." Editor's note:we didn't make this up! It's from a 1932 trademark
case of the Supreme Court of Canada called Lightning Fastener Co. Ltd. V.
Canadian GoodrichCo. Ltd.
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