Minnesota Statutes Property Taxes (Ch. 272-289) § 281.322. Failure to serve notices to extinguish lien

No notice of expiration of the time of redemption upon any real estate tax judgment sale certificate, forfeited tax sale certificate, or state assignment certificate issued pursuant to any law of this state at or pursuant to any such sale held between January 1, 1936, and April 24, 1941, or held thereafter, shall be issued or served after the expiration of six years from the date of the certificate, nor shall such certificate be recorded in the office of the county recorder or the office of the registrar of titles of the proper county after the expiration of seven years from the date of the certificate.