<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Karl_Benz" id="mwvg" rel="mw:WikiLink" title="Karl Benz">Karl Benz</a>, working in <a href="https://en.wikipedia.org/wiki/Mannheim" id="mwvw" rel="mw:WikiLink" title="Mannheim">Mannheim</a>, <a href="https://en.wikipedia.org/wiki/German_Empire" id="mwwA" rel="mw:WikiLink" title="German Empire">Germany</a>, files for a <a href="https://en.wikipedia.org/wiki/Patent" id="mwwQ" rel="mw:WikiLink" title="Patent">patent</a> on his first reliable <a href="https://en.wikipedia.org/wiki/Two-stroke_engine" id="mwwg" rel="mw:WikiLink" title="Two-stroke engine">two-stroke gas engine</a>. He was granted the patent in 1879.