Section 648.057 - Cancellation of registration upon termination of business; signature of registrant; delivery(1) An assumed business name must be canceled not later than the 60th day after the registrant or registrants of the assumed business name cease doing business under that name.(2) The application required by subsection (1) of this section shall be signed by the registrant or registrants of the assumed business name or by the authorized representative of the registrant or registrants and shall be delivered to the Office of the Secretary of State for filing.