Section 28
SEC. 28. Display of certificate required.&mdashIt shall be the duty of every pharmacist engaged in the practice of pharmacy either on his own account or under the employ of another, to display his certificate of registration in a prominent and conspicuous place in pharmacy, drugstore, hospital pharmacy or drug establishment which he operates or in which he is employed. No pharmacist shall with his knowledge allow his certificate of registration to be displayed in such establishments when he is not actually employed or operating therein in his professional capacity.