A powder dispenser 10 includes a powder housing 28 for holding a supply of powdered material to be dispensed, the powder housing including a first conduit 32 extending there through in displaced relation to the powdered material; a metering plate 16 having only a single receptacle area 24 for holding...http://www.google.de/patents/US5394868?utm_source=gb-gplus-sharePatent US5394868 - Inhalation device for powdered medicaments
