A fragrance dispensing apparatus of the type which releases a fragrance from a solid polyamide resin body includes a volatile substance such as perfume oils, insecticides, odorants, bactericides and animal repellants. The apparatus includes a housing having at least one opening therein and disposed adjacent...http://www.google.fr/patents/US4837421?utm_source=gb-gplus-shareBrevet US4837421 - Fragrance dispensing apparatus
