Logo of <a href="https://en.wikipedia.org/wiki/CADO_Systems" class="extiw" title="en:CADO Systems">CADO Systems</a>
CADO Systems
Own vectorization, adapted from <a rel="nofollow" class="external text" href="http://www.1000bit.it/ad/bro/cado/CadoSystem20-20.pdf">last page of brochure</a>