The licensee, in a conspicuous place easily viewed by the public in which the licensed business, trade, profession or calling is carried on, shall display every certificate of license. When such certificate of license has expired, it shall be removed from public view. A licensee without a fixed place of business shall carry a certificate of license while engaged in business. It shall be the duty of each licensee, agent and employee to show the certificate of license upon demand. (Ord. 05-01, 1-10-2005)