No person or firm shall hereafter engage in the business of inspecting, cleaning, repairing, alteration, sale, or installation of natural gas piping systems and appliances until he or she shall have registered as a gas fitter as hereinafter provided. Application for registration shall be made in writing at the office of the Utilities Superintendent showing the name and residence of the applicant, the business location of the applicant, and any other information as may be required.
(1972 Code, § 10-412) Penalty, see § 113.999