21 Pa. Stat. § 283.2
Whenever heretofore any land has been sold by the county treasurer of any county for the purpose of securing the payment of delinquent taxes which were assessed and levied against such land, and the county treasurer in pursuance of such sale executed a deed for said lands and acknowledgment of such deed by the county treasurer was defective in any respect, or where such deed was not acknowledged in open court or where the records of the court failed to show a minute of such acknowledgment in open court, or where the county treasurer's return to any tax sale so made was not made to the next term, such sale and such deed shall not be invalidated by reason of such defective acknowledgment, or by reason of the fact that such deed was not acknowledged in open court or by reason of the fact that the records of the court fail to show a minute of such acknowledgment in open court, or for failure to make return of any tax sale so made to the next term, if in all other respects the law relating to the holding of such sale were fully complied with and the deed was in fact acknowledged before an officer duly authorized by law to take acknowledgments and a return thereof made at a subsequent term of court; and all such treasurer's sales and treasurer's deeds are hereby ratified, confirmed and validated, and the title to any such land purchased by any person or by the county commissioners of any county at such treasurer's sale and the deed executed and acknowledged to such purchaser is hereby declared to be as valid as if such deed had been acknowledged in open court, proper minute thereof made, and return to said tax sale duly made in full conformity with the law relating thereto.
21 P.S. § 283.2