Logo of former Arbed
<a href="//commons.wikimedia.org/wiki/User:Kopiersperre" title="User:Kopiersperre">Kopiersperre</a>
Own work  using: <a rel="nofollow" class="external free" href="http://www.brandprofiles.com/arbed-logo-1">http://www.brandprofiles.com/arbed-logo-1</a>