An automatic lavatory detergent and perfume dispenser including a control circuit assembly, a detergent dispensing device controlled to send a fixed amount of a detergent into a water container being linked to the flush pipe of a lavatory flushing system, and a DC motor fan operated perfume dispensing...http://www.google.fr/patents/US5377363?utm_source=gb-gplus-shareBrevet US5377363 - Automatic lavatory detergent and perfume dispenser
Automatic lavatory detergent and perfume dispenser
