Upon revoking any certificate of authority, the secretary of state shall: (1) Issue an original and one exact or conforming copy of a certificate of revocation; (2) File the original in his office; and (3) Mail to the corporation at its registered office in this state a notice of revocation accompanied by the copy. Source: SL 1965, ch 24 , § 81; SL 1989, ch 393 , § 45.