Symbol 6335A from IEC 60417 - Title/Meaning: Negative acknowledgement; failure; NACK <br>
Function/description: To indicate the status of negative acknowledgement, or to indicate the failed status.
<b>Vectorization: </b> <a href="//commons.wikimedia.org/wiki/User:Mrmw" title="User:Mrmw">Mrmw</a>
2015-06-20
Own work  using: <span class="url"><a rel="nofollow" class="external text" href="https://www.iso.org/obp/graphics/grs/b78ff258-924f-4808-b74a-1a1d8775ea7d_200.png">iso.org/obp/graphics/grs/b78ff258-924f-4808-b74a-1a1d8775ea7d 200.png</a></span>