Logo of <a href="https://en.wikipedia.org/wiki/Cisco" class="extiw" title="en:Cisco">Cisco Systems</a> used from 1990 to 1996
Cisco Systems
Extracted from <a rel="nofollow" class="external free" href="https://web.archive.org/web/19961227162823/http://www.cisco.com:80/warp/public/734/cwblue/cwbl_pl.pdf">https://web.archive.org/web/19961227162823/http://www.cisco.com:80/warp/public/734/cwblue/cwbl_pl.pdf</a>