(1) When a design is registered, the registered proprietor of the design shall, subject to the provisions of this Act, have copyright in the design during ten years from the date of registration.
     (2) If, before the expiration of the said ten years, application for the extension of the period of copyright is made to the Controller in the prescribed manner, the Controller shall, on payment of the prescribed fee, extend the period of copy-right for a second period of five years from the expiration of the original period of ten years.