<div class="description">
<ul><li><b>Scope and content:</b>  This is the patent file for an improvement in calculating machines, which would mechanically assist with arithmetic equations, from William S. Burroughs of St. Louis, Missouri.  This file includes drawings, specifications, applications, and amendments.</li></ul></div>
<div class="fn value">
Burroughs, William Seward, 1858?-1898 (<a rel="nofollow" class="external text" href="https://research.archives.gov/person/10574864">NARA record: 10574864</a>)</div>
1840 – 2005
<a href="https://en.wikipedia.org/wiki/U.S._National_Archives_and_Records_Administration" class="extiw" title="en:U.S. National Archives and Records Administration">U.S. National Archives and Records Administration</a>