History: Patent for the Zipper in 1893

Today in History: Patent for the Zipper in 1893
Whitcomb Judson patented and introduced the first modern “zipper” at the Chicago World’s Fair of 1893. He had improved upon an earlier idea dating back to 1851 and began to market what he called a “Clasp Locker” (a fastener for shoes). Supposedly, Judson made created his zipper for a friend who had problems with his back (from bending down to tie his shoes).
Inquiries about this original, vintage poster at posterconnection@gmail.com.
Direct link to poster at https://bit.ly/36CWG6B
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