| 摘要 |
<p>CANADA "IMPROVEMENTS IN OR RELATING TO CONTAINERS HAVING FLUID-TIGHT SEALING MEANS" In a container of the kind having an impermeable base and a flexible cover which is sealed into a groove or slot in the base to form an airtight package, the cover has, around its periphery, an endless male member for engaging in the slot or groove, e.g. an endless inflatable tube, which is resiliently gripped in the slot or groove. 1.</p> |
