A zoning certificate shall be obtained for any lawful nonconforming uses of land or buildings created by adoption of this Zoning Ordinance. Application for such certificate for a nonconforming use shall be filed with the Zoning Inspector by the owner or lessee of the building or land occupied by such nonconforming use within three months of the effective date of this Zoning Ordinance, (Ordinance 14, 1967, passed May 22, 1967). It shall be the duty of the Zoning Inspector to issue a certificate for a lawful nonconforming use, but failure to apply for such certificate for a nonconforming use or refusal of the Zoning Inspector to issue a certificate for such nonconforming use shall be evidence that such nonconforming use was either illegal or did not lawfully exist at the effective date of this Zoning Ordinance, (Ordinance 14, 1967, passed May 22, 1967). No charge shall be made for issuing a zoning certificate in accordance with this section.