| 摘要 |
Stationery including a snap-open envelope having perforations arranged so that an end portion separates from the remaining portion to expose the contents. The remaining portion provides a return or reusable envelope having an end closure flap which, when the return envelope is closed, may cover a portion of the front panel of the original envelope, with a portion of the original back panel of the original envelope becoming the front panel of the return envelope. The snap-open envelope can be of the pasted type having front and back panels die cut or perforated from different paper sheets with the panels pasted together to form the envelope and with an insert or information sheet between the panels. This envelope can be processed by high speed data processing equipment including computer driven printing.
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