Invesco Unit Trusts Taxable Income Series 640: S-6 filed Aug 2, 2022

Name: Invesco Unit Trusts Taxable Income Series 640 S-6 (0001528621-22-001193)
Creator: Invesco Unit Trusts Taxable Income Series 640
Published: 2022-08-02

Form type: S-6
Filing date: Aug 2, 2022
Accession number: 0001528621-22-001193
Filer: Invesco Unit Trusts Taxable Income Series 640 (CIK 1686060)