If any building or premises within the 1,500 foot radius area above described, which shall be used for the sale of alcoholic liquor under an all-alcoholic liquor package store permit, shall cease to be actually so used under any such permit, the premises shall not again be used for the sale of alcoholic liquors under a package store permit, unless within 30 days after the premises shall have ceased to be so used, it shall again be occupied and actually used for the sale of alcoholic liquor under a package store permit issued by the liquor control commission.
('66 Code, § 6-7)