loading coil
... the loading coil saved AT&T an estimated US$100 million in the first quarter of the 20th century but Oliver Heaviside was paid nothing for the idea?
... the <b id="mwGDE"><a href="./Loading_coil" id="mwGDI" rel="mw:WikiLink" title="Loading coil">loading coil</a></b> saved <a class="mw-redirect" href="./American_Telephone_&amp;_Telegraph" id="mwGDM" rel="mw:WikiLink" title="American Telephone &amp; Telegraph">AT&amp;T</a> an estimated US$100<span id="mwGDQ" typeof="mw:Entity"> </span>million in the first quarter of the 20th century but <a href="./Oliver_Heaviside" id="mwGDU" rel="mw:WikiLink" title="Oliver Heaviside">Oliver Heaviside</a> was paid nothing for the idea?