<a href="https://en.wikipedia.org/wiki/Accordion" id="mwSg" rel="mw:WikiLink" title="Accordion">Accordion</a> patent granted to <a href="https://en.wikipedia.org/wiki/Cyrill_Demian" id="mwSw" rel="mw:WikiLink" title="Cyrill Demian">Cyrill Demian</a> in <a href="https://en.wikipedia.org/wiki/Vienna" id="mwTA" rel="mw:WikiLink" title="Vienna">Vienna</a>, <a href="https://en.wikipedia.org/wiki/Austrian_Empire" id="mwTQ" rel="mw:WikiLink" title="Austrian Empire">Austrian Empire</a>.