<page_title> Dropped ceiling </page_title> <section_title> History </section_title> <table> <cell> 05/28/1919 <col_header> U. S. Dropped Ceiling Patents to September 8, 1958 </col_header> <col_header> Date Filed </col_header> </cell> <cell> 1,470,728 <col_header> U. S. Dropped Ceiling Patents to September 8, 1958 </col_header> <col_header> Patent No. </col_header> </cell> <cell> Hall <col_header> U. S. Dropped Ceiling Patents to September 8, 1958 </col_header> <col_header> Applicant </col_header> </cell> </table>
U. S. Patent No. 1,470,728 for dropped ceilings was applied by Hall on May 28, 1919.