Almon Brown Strowger
Unknown author<span style="display: none;">Unknown author</span>
not later than 1902
<a rel="nofollow" class="external autonumber" href="http://www.britishtelephones.com/histatm.htm">[1]</a>, <a rel="nofollow" class="external autonumber" href="http://www.plesseyattheedge.co.uk/assets/images/galleries/downloads/ple_d_001210.pdf">[2]</a> The Plessey Publication - "60th Anniversary of the Strowger Works" 1912 - 1972