作者: Warren R. Pitts
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摘要: Looseleaf notebooks, report folders, and similar stationary items incorporating a deep pocket extending over the length of item. A flexible transparent notebook this design incorporates pair thermoplastic sheets which are cut to appropriate dimensions heat-sealed form is coextensive with outer cover. ring binder support fastened center one plastic sheets. Such or like may advantageously incorporate an auxiliary affixed at edges permit folding along edge. The be provided opaque cover by inserting more within large pocket.