| 摘要 |
<p>A binder system is disclosed that flexibly secures one or more flat objects including by mechanical grasping of flat-shaped or sheet materials in a central spring clamp having a compact cross-sectional geometry that can adapt to several sizes of clamped materials and uses. In some aspects the spring clamp comprises an elongated tri-folded rail with a flat central portion and aids a user in opening and keeping the system in its open configuration. In other aspects the system includes customizable covers attachable to said central spring clamp.</p> |
