April 10 – Walter Hunt is granted a United States patent for the modern safety pin.[6][7] In October he patents the first repeating rifle to use metallic cartridges (of his own design) and a spring-fed magazine.[8]
↑ US 6529"Inhaler or Lung Protector". Christianson, Scott (2010). Fatal Airs: The Deadly History and Apocalyptic Future of Lethal Gases that Threaten Our World. ABC-CLIO. ISBN9780313385520.
↑ Reynolds, Moira Davison (2004). American Women Scientists: 23 Inspiring Biographies, 1900-2000. Jefferson NC: McFarland. p.5. ISBN978-0-78642-161-9.
↑ Constantin von Wurzbach, ed. (1874). BLKÖ:Rusconi, Maurus (in German). Biographisches Lexikon des Kaiserthums Oesterreich – via Wikisource.[scan]
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