A venting container including a lid and base having an inner cavity and a side wall that terminates in a rim, the lid including a central panel and a peripheral sealing lip that surrounds the panel, the peripheral sealing lip having a generally inverted U-shaped cross section that defines a lid channel...http://www.google.es/patents/US7866502?utm_source=gb-gplus-sharePatente US7866502 - Venting container
