Said patents and certificates thereon shall be recorded in the recorder's office of the county in which the land lies, in a book to be provided for that purpose, at the usual fees for the like number of words, which record shall be notice to all persons, and may be used as evidence before any court or magistrate of the sum to the commonwealth, sufficient to maintain a suit against the patentee, his heirs, executors, administrators or assigns: Provided, That if the record so as aforesaid directed, should not be made within six months from the date of such patent or patents, the same patent or patents shall be void and of no validity or effect whatever.