Versions of 16 CFR 642.4 - Effective date on LawServer 2024 16 CFR 642.4 – Effective date 2023 16 CFR 642.4 – Effective date 2022 16 CFR 642.4 – Effective date 2021 16 CFR 642.4 – Effective date 2020 16 CFR 642.4 – Effective date 2019 16 CFR 642.4 – Effective date 2016 16 CFR 642.4 – Effective date 2015 16 CFR 642.4 – Effective date 2014 16 CFR 642.4 – Effective date