Service of the order to show cause shall be made in accordance with the provisions of the Code of Civil Procedure or by depositing a copy of the order to show cause certified under the seal of the commission with a copy of the petition attached thereto, in the United States mail, enclosed in a sealed envelope, registered, with postage prepaid, addressed to each of the owners or claimants, at the address specified in the petition.

(Enacted by Stats. 1951, Ch. 764.)