A discharge apparatus for media comprises two functional units, each including a medium reservoir, a discharge unit operatively connected to the medium reservoir, and a depressible discharge actuator operatively connected to the discharge unit. A mechanism is further provided for simultaneously depressing...http://www.google.es/patents/US5301841?utm_source=gb-gplus-sharePatente US5301841 - Media discharge apparatus for housing a movable reservoir
Media discharge apparatus for housing a movable reservoir
