<a href="https://en.wikipedia.org/wiki/United_States_Patent_and_Trademark_Office" class="extiw" title="w:United States Patent and Trademark Office">United States Patent and Trademark Office</a> grant of first trademark for <a href="https://en.wikipedia.org/wiki/Aquaphor" class="extiw" title="w:Aquaphor">Aquaphor</a> to <a href="https://en.wikipedia.org/wiki/Beiersdorf" class="extiw" title="w:Beiersdorf">Beiersdorf</a>, trademark no. 198,807, dated May 26, 1925.
USPTO Form
United States Patent and Trademark Office