Section 22
SEC. 22. As soon as this Act shall take effect, any person desiring to practice the trade of master plumber, shall be required to obtain a certificate of registration in the manner and under the conditions herein provided. All master plumbers duly registered and examined under the provisions of city ordinances in force one year prior to the effectivity of this Act and all persons with at least five years of continuous practice as plumbers and certified to as capable to practice the trade by the Board of Examiners within one year after the effectivity of this Act, shall be automatically registered under the provisions hereof. Certificates of registration held by such persons in good standing shall have the same force and effect as though the same had been issued under the provisions of this Act.