Invesco Unit Trusts, Municipal Series 1331: 485BPOS filed May 28, 2026

Name: Invesco Unit Trusts, Municipal Series 1331 485BPOS (0001528621-26-000540)
Creator: Invesco Unit Trusts, Municipal Series 1331
Published: 2026-05-28

Form type: 485BPOS
Filing date: May 28, 2026
Accession number: 0001528621-26-000540
Filer: Invesco Unit Trusts, Municipal Series 1331 (CIK 1689972)