Versions of 27 CFR 30.72 - Recording obscuration by proprietors using the optional method for determination of proof on LawServer 2024 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2023 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2022 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2021 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2020 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2019 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2016 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2015 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2014 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2010 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof 2009 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof