Upon the filing of the application for registration as a warm-air furnace heating and installing contractor in proper form and the payment of registration fee fixed herein, the Building Commissioner shall register the applicant as a warm-air furnace heating and installing contractor and shall issue to the applicant a certificate of registration which will authorize the applicant to engage in such business for the year in which it is issued; providing, that the applicant has filed with the City Clerk an indemnifying bond in an amount to be determined by the City Council.
(‘69 Code, § 5-55)