In all instances in which corporations, incorporated under the laws of this state, have properly issued any of their capital stock prior to July 4, 1951, and have filed in the office of secretary of state certificates relative thereto containing the specific information required by statute at the time of the issuance of said stock, although there has been failure to file such certificates in said office within the time specified therefor by law, such filings are hereby legalized and shall be held to have the same force and effect as though the filings of the said certificates had been made within the period prescribed by the statute then in effect.
Iowa Code § 591.13