Versions of Michigan Laws 339.1309 - Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties on LawServer 2023 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2022 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2020 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2019 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2017 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2016 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2015 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2014 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2013 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties 2009 Michigan Laws 339.1309 – Unethical or gross ignorance or inefficiency in sale or fitting of hearing aid; penalties