An ovenware receptacle system for popping grain in a microwave oven comprising a storage receptacle (14), a conical popper receptacle (12) and a perforated receptacle (13) all having upper rims adapted to fit one upon another with the popper receptacle and the perforated receptacle selectively in upright...http://www.google.fr/patents/US4532397?utm_source=gb-gplus-shareBrevet US4532397 - Ovenware receptacle system
