What is Cyrill Demian?
Cyrill Demian (1772–1849) was an [[Austrian Empire|Austrian]]-[[Armenians|Armenian]] inventor, Organ maker, and piano maker who on May 6, 1829, along with his sons Karl and Guido, would patent the [[accordion]]. This patent would later be granted on May 23, 1829.<ref>{{Cite web|date=2009-06-19|title=The Classical Free-Reed, Inc. Demian's Accordion Patent|url=http://www.ksanti.net/free-reed/history/demian.html|access-date=2024-01-15|website=web.archive.org|archive-date=2009-06-19|archive-url=https://web.archive.org/web/20090619162610/http://www.ksanti.net/free-reed/history/demian.html|url-status=dead}}</ref> == References == {{reflist}} {{DEFAULTSORT:Demain, Cyrill}} [[Category:1772 births]] [[Category:1849 deaths]] [[Category:Inventors]] [[Category:Austrian people]] {{bio-stub}}