If at or prior to the hearing, a petition of protest duly signed and acknowledged by the owners of fifty percent or more of all the frontage proposed to be altered, by the owners of fifty percent or more of the frontage immediately in the rear thereof, by the owners of fifty percent or more of the frontage directly opposite the frontage proposed to be altered, the amendment, supplement or change shall not be passed except by the favorable vote of three-fourths of all the duly elected members of Council.
(Ord. 1953-29. Passed 6-1-53.)