Releases of mortgages made valid.

When any release, cancellation, or satisfaction of a mortgage of real estate has been of record for more than twenty-one years in the office of the county recorder of the county in which such real estate is situated, and the record thereof shows that there is a defect in such release, cancellation, or satisfaction, such release, cancellation, or satisfaction and the record thereof shall be cured of such defect, if such defect is due to any of the following: (A) It purports to be signed by an agent or attorney of the mortgagee or a trustee, and no power of attorney or other evidence of authority so to release, cancel, or satisfy such mortgage is of record. (B) It was signed by less than all of two or more executors, administrators, guardians, assignees in insolvency, or trustees. (C) The record of such release, cancellation, or satisfaction is not attested by the recorder. (D) The release, cancellation, or satisfaction by a corporation is executed by officers thereof without signing the name of the corporation thereto.