Del. Code Ann. tit. 2, § 1807
Service of notice
59 Del. Laws, c. 365, § 1; 60 Del. Laws, c. 503, § 16; 69 Del. Laws, c. 435, § 38;
Service of the said notice shall be made by certified mail, return receipt requested, addressed to the Secretary of the Department.
59 Del. Laws, c. 365, § 1; 60 Del. Laws, c. 503, § 16; 69 Del. Laws, c. 435, § 38