Section 14
SEC. 14. The grantee shall not, without the approval of the Philippine Legislature first had, lease, grant, sell, convey or give in usufruct this franchise and the property and rights acquired thereunder to any person, firm, company, or corporation: Provided, That for the purpose of such lease, granting, sale, conveyance, or giving in usufruct, it shall be necessary to file in the office of the Secretary of Commerce and Communications an agreement in writing by which the person, firm, company, or corporation in whose favor such lease, grant, sale, conveyance, or giving in usufruct, is made, shall bind himself to comply with all the terms and conditions imposed upon the grantee by this franchise, and to accept the same subject to all existing terms and conditions.