Minn. Stat. § 525.712: REQUISITES.

The appeal may be taken under the Rules of Appellate Procedure by any person aggrieved after service by any party of written notice of the filing of the order, judgment, or decree appealed from, or if no written notice is served, within six months after the filing of the order, judgment, or decree. Except as provided in this section, the appeal shall be perfected and determined upon the record as provided in the Rules of Appellate Procedure.