Long-time secondary logo of <a href="https://en.wikipedia.org/wiki/CBS" class="extiw" title="w:CBS">CBS</a>, minted in 1966 and designed by William Golden. The eye symbol used in this logo is based upon an 1850s <a href="https://en.wikipedia.org/wiki/Quaker" class="extiw" title="w:Quaker">Quaker</a> design of the <a href="https://en.wikipedia.org/wiki/all_seeing_eye" class="extiw" title="w:all seeing eye">all seeing eye</a>, and was first <a rel="nofollow" class="external text" href="http://www.cbs.com/eye">unveiled in October 1951 with no accompanying copyright</a>. No copyright was ever filed, so that particular aspect of the image qualifies it for public domain. However, this image may still be subject to trademark restrictions.<br>
See Nikken logo in <a href="https://en.wikipedia.org/wiki/Threshold_of_originality#United_States" class="extiw" title="en:Threshold of originality">Threshold of originality: United States</a> (see copyright's office letter page 7). The eye symbol is <a href="//commons.wikimedia.org/wiki/Category:Eye_symbols" title="Category:Eye symbols">common</a>.
<p><a href="https://en.wikipedia.org/wiki/William_Golden_(graphic_designer)" class="extiw" title="en:William Golden (graphic designer)">William Golden</a>
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