The period of time during which the following nonconforming uses of buildings, structures or land may continue or remain in residence districts shall be limited to two years from the effective date of Ordinance 10-16-67, passed November 20, 1967, or of any amendment thereto which causes the use to be nonconforming. Every such nonconforming use shall be completely removed from the premises by the expiration date:
(a) Any nonconforming use of a building or structure having an assessed valuation not in excess of five hundred dollars ($500.00) on the effective date of this section (Ordinance 10-16-67, passed November 20, 1967).
(b) All nonconforming signs, billboards and outdoor advertising structures.
(c) Any nonconforming use of land where no enclosed building is involved, or where the only buildings employed are accessory or incidental to such use, or where such use is maintained in connection with a conforming building.
(Ord. 10-16-67. Passed 11-20-67.)