A container can have a body with an integrally formed base attached to the body. The base includes a concave annular wall extending from the container sidewall to a standing surface, and an inner wall extending from the standing surface to a substantially flat inner annular wall. The inner annular wall...http://www.google.fr/patents/US7980404?utm_source=gb-gplus-shareBrevet US7980404 - Multi-functional base for a plastic, wide-mouth, blow-molded container
Multi-functional base for a plastic, wide-mouth, blow-molded container
