Iowa Code § 591.7

In all instances where cooperative associations or corporations have been organized under the law as it appears in chapter 389, Code of 1927, where such associations or corporations have filed the original articles rather than a verified copy with the county recorder or where the secretary of state failed to certify the filing and acceptance of such articles, or where the certificate of the secretary of state contained a facsimile signature rather than the true signature of the secretary of state, or where there is any defect in the articles, notice, procedure or otherwise, the incorporation of such corporation or association and all of the corporate acts thereof are hereby legalized in all respects.