Missouri Laws > § 491.320 Missouri Laws 491.320 – Validity of subpoena Current as of: 2023 | Check for updates | Other versions Terms Used In Missouri Laws 491.320Subpoena: A command to a witness to appear and give testimony. A subpoena issued by an associate circuit judge shall be valid to compel the attendance in an associate circuit judge’s court of a witness, as provided in sections 491.010 to 491.270. Previous sectionNext section Chapter 491 Contents