The dispenser for a W.C. bowl comprises a support means (40) having a support (41, 42) for containing a first active substance in liquid or solid form and provided with at least one exit aperture (3) for said active substance; and hooking means (43) for supporting said support (41, 42) below the rim...http://www.google.es/patents/US20070240251?utm_source=gb-gplus-sharePatente US20070240251 - W.C. Dispenser with Perfuming Chamber
