| 摘要 |
A case for storing a disc having a central aperture. The case has first and second panels hingedly connected together and adapted to be closed together to form a generally flat, rectangular enclosure for containing a disc. A tapering boss projects from the first panel inside the enclosure on which the central aperture of the disc can be mounted. A retainer ring associated with the second panel is adapted to fit over the boss when the panels are closed together to retain the disc on the hub of the boss.
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