A dispenser (1) including a reservoir (4), a pump (6) and an atomizing nozzle (17) has on the nozzle (17) a germ barrier (22) in the form of a valve that opens and closes dependent on pressure. A further germ barrier (23) with a filter (54) acting as a seal in the connecting area between reservoir (4)...http://www.google.es/patents/US5988449?utm_source=gb-gplus-sharePatente US5988449 - Media dispenser having a vent with a microbic barrier
Media dispenser having a vent with a microbic barrier
