William Gray of <a href="https://en.wikipedia.org/wiki/Hartford,_Connecticut" id="mwoA" rel="mw:WikiLink" title="Hartford, Connecticut">Hartford, Connecticut</a> is granted United States Patent Number 408,709 for "Coin-controlled apparatus for telephones."<sup about="#mwt23" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-3"}}' id="cite_ref-3" rel="dc:references" typeof="mw:Extension/ref"><a href="./August_13#cite_note-3" id="mwoQ" style="counter-reset: mw-Ref 3;"><span class="mw-reflink-text" id="mwog">[3]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-3"><cite about="#mwt20" class="citation web cs1" id="mwBpE"><a class="external text" href="https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US408709.pdf" id="mwBpI" rel="mw:ExtLink nofollow">"Coin-controlled apparatus for telephones"</a> <span class="cs1-format" id="mwBpM">(PDF)</span>. <i id="mwBpQ">google.com</i>. <a class="external text" href="https://web.archive.org/web/20200402133309/https://docs.google.com/viewer?url=patentimages.storage.googleapis.com%2Fpdfs%2FUS408709.pdf" id="mwBpU" rel="mw:ExtLink nofollow">Archived</a> <span class="cs1-format" id="mwBpY">(PDF)</span> from the original on 2 April 2020<span class="reference-accessdate" id="mwBpc">. Retrieved <span class="nowrap" id="mwBpg">13 August</span> 2017</span>.</cite><span about="#mwt20" class="Z3988" id="mwBpk" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=google.com&amp;rft.atitle=Coin-controlled+apparatus+for+telephones&amp;rft_id=https%3A%2F%2Fdocs.google.com%2Fviewer%3Furl%3Dpatentimages.storage.googleapis.com%2Fpdfs%2FUS408709.pdf&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AAugust+13"></span></span>