Iowa Code § 558.7: Assignment of certificate of entry deemed deed.

An assignment shall have the same force and effect as a deed of conveyance and shall be conclusively presumed to carry all right, title, and interest of the patentee of the real estate, the same as though a deed of conveyance had been subsequently executed by the patentee or assignor to a subsequent grantor, when the record shows:

1. That the original entry, certificate of entry, receipt, or duplicate thereof has been assigned;

2. That prior or subsequent to such assignment, the United States or state issued a patent or conveyance to the assignor;

3. That no deed of conveyance appears on record from the person who made the original entry or assignor to the assignee; and

4. That the present record owner holds title under such assignment.