Versions of See prior versions of a law on LawServer 2024 Iowa Code 91C.1 – Definition — exemption — combined registration and licensing process for plumbers and mechanical professionals 2023 Iowa Code 91C.1 – Definition — exemption — combined registration and licensing process for plumbers and mechanical professionals 2022 Iowa Code 91C.1 – Definition — exemption — combined registration and licensing process for plumbers and mechanical professionals. 2020 Iowa Code 91C.1 – Definition — exemption — combined registration and licensing process for plumbers and mechanical professionals. 2018 Iowa Code 91C.1 – Definition — exemption — combined registration and licensing process for plumbers and mechanical professionals. 2016 Iowa Code 91C.1 – Definition 2014 Iowa Code 91C.1 – Definition – exemption – combined registration and licensing process for plumbers and mechanical professionals. 2009 Iowa Code 91C.1 – Definition — exemption
