| 摘要 |
<p>An open mouthed container (12) has a base and four sides. The sides taper outwardly from the base so as to permit nesting of successive containers. The rim of the mouth has a form locking support surface (13-16) adapted to engage the corresponding rim of an upturned container (which acts as a lid). The form locking surface (13-16) prevents lateral movement between the base and the lid.</p> |
