Invesco Unit Trusts Taxable Income Series 640: 497J filed Dec 26, 2024

Name: Invesco Unit Trusts Taxable Income Series 640 497J (0001528621-24-001417)
Creator: Invesco Unit Trusts Taxable Income Series 640
Published: 2024-12-26

Form type: 497J
Filing date: Dec 26, 2024
Accession number: 0001528621-24-001417
Filer: Invesco Unit Trusts Taxable Income Series 640 (CIK 1686060)