Inhalers for medical purposes, sold empty; inhalers for therapeutic purposes, sold empty; pressurized metered dose medical inhalers, sold empty; dry powder inhalers for medical or therapeutic use, sold empty; medical inhalers; apparatus for administering drugs or pharmaceutical preparations by inhalation, namely, nebulizers for respiration therapy and medical apparatus for facilitating the inhalation of pharmaceutical preparations; and drug delivery apparatus, namely, drug delivery systems; r...