Every license or certificate of registration issued by each board shall bear a serial or license number, the full name of the applicant, the date of issuance, and the seal of the board: Provided, That licenses or certificates of registration issued or renewed on or after July 1, 2003, will indicate both the date of issuance and the date of expiration. The licenses or certificates of registration shall be signed by the board's president and secretary or executive secretary. No license or certificate of registration granted or issued under the provisions of this chapter may be assigned.