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A resource for reliable information about significant people, places, events, and things in Minnesota history.
Figure 1 of Herbert Sellner’s “Patent Application for Amusement Device,” filed with the US Patent Office on April 24, 1926. Sellner Patent Application for Amusement Device, Sheet 1, filed April 24, 1926. United States Patent and Trademark Office. Public domain.
Made possible by the Arts and Cultural Heritage Fund through the vote of Minnesotans on November 4, 2008. Administered by the Minnesota Historical Society.
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