(1) A license under section3 shall, unless revoked earlier, continue in force for a period of three years from the dare on which it is granted:

Provided that such a license may be granted for a shorter period if the person by whom the license is required so desires or if the licensing authority for reasons to be recorded in writing considers in any case that the license should be granted for a shorter period.

(2) A license under any other provision of Chapter II shall, unless revoked earlier, continue in force for such period from the dare on which it is granted as the licensing authority may in each case determine.

(3) Every license shall, unless the licensing authority for reasons to be recorded in writing otherwise decides in any case, be renewable for the same period for which the license was originally granted and shall be so renewable from time to time, and the provisions of section 13 and 14 shall apply to the renewal of a license as they apply to the grant thereof.