U.S. Patent 1,670,267, <a href="https://en.wikipedia.org/wiki/en::en:William_Lowell,_Sr." class="extiw" title="w:en::en:William Lowell, Sr.">w:en::en:William Lowell, Sr.</a> in 1925
Original uploader was <a href="https://en.wikipedia.org/wiki/en::en:User:Richard_Arthur_Norton_(1958-_)" class="extiw" title="w:en::en:User:Richard Arthur Norton (1958- )">Richard Arthur Norton (1958- )</a> at <a class="external text" href="https://en.wikipedia.org">en.wikipedia</a>
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