https://www.encyclopediadubuque.org/index.php?action=history&feed=atom&title=File%3ATschirgi_Patent.jpg File:Tschirgi Patent.jpg - Revision history 2026-04-24T09:31:09Z Revision history for this page on the wiki MediaWiki 1.45.1 https://www.encyclopediadubuque.org/index.php?title=File:Tschirgi_Patent.jpg&diff=6634&oldid=prev Mmay: M. Tschirgi. Patent No. 47,347. April 18, 1865. 2008-11-18T02:13:49Z <p>M. Tschirgi. Patent No. 47,347. April 18, 1865.</p> <p><b>New page</b></p><div>M. Tschirgi. Patent No. 47,347. April 18, 1865.</div> Mmay