The court administrator of the court in which any indictment is to be tried shall at all times, upon application of a defendant not represented by counsel, and without charge, issue as many blank subpoenas, under the seal of the court, and subscribed by the court administrator as court administrator, for witnesses in the state, as are approved by order of court as provided by rule 22.01, subdivision 3, of the Rules of Criminal Procedure and required by the defendant.
Issuance of subpoenas shall not require court approval if defendant is represented by counsel.