A releasably engageable inhaler including a housing for holding medicine to be delivered to a patient through a discharge port. A connector allows the selective engagement of the inhaler to other inhalers which may contain the same or a different medication. An indicator on the surface of the housing...http://www.google.es/patents/US5664557?utm_source=gb-gplus-sharePatente US5664557 - Releasably engageable coupling for an inhaler
