| 摘要 |
<p>A ring binder clamp and perforator device, the device including two plates (2, 4) perforating means (15) carried by the plates (2, 4) for perforating an article when the article is placed between the plates (2, 4), the device further including retaining means (8) for retaining the device on the rings of a ring binder, and clamping means for clamping the device on the rings of a ring binder.</p> |
