| Patents for B65D 27 - Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents (3,640) |
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| 03/08/1988 | US4729507 Easily openable reusable envelope |
| 03/01/1988 | US4727988 Folded envelope and blank for forming same |
| 02/24/1988 | EP0256731A2 Sealable envelopes |
| 02/23/1988 | US4726802 Mailing cover with reply envelope and response device from integral web |
| 02/18/1988 | DE3627818A1 Envelope having a window in the front wall |
| 02/17/1988 | CN87207078U Bag with coated binder |
| 02/16/1988 | US4724996 Data carrying assembly and method and apparatus for forming same |
| 02/10/1988 | CN86208642U Easy-to-open envelope |
| 02/10/1988 | CN86206099U Envelope with dried glue |
| 02/04/1988 | DE3622997A1 Envelope, in particular for automatic filling |
| 01/21/1988 | DE3624527A1 Rapid opener |
| 01/20/1988 | CN87207562U Easy to seal and easy to open envelope |
| 01/19/1988 | CA1231508A1 Process and apparatus for forming integral interlocking closure film stock |
| 01/13/1988 | EP0252129A1 Folded envelope and blank for forming same |
| 01/06/1988 | CN87200239U Implement for protecting printed matter mail |
| 12/31/1987 | CN87200631U Envelope |
| 12/29/1987 | US4715531 Reusable remailable envelope |
| 12/29/1987 | US4715530 Two-part mailer with return envelope |
| 12/17/1987 | DE3619502A1 Strip safeguard |
| 12/15/1987 | US4712729 Tamper evident envelope |
| 12/09/1987 | EP0248409A1 Letter form and process for manufacturing a letter form |
| 12/09/1987 | EP0076311B1 Easily opened and reclosable bag and apparatus for making same |
| 12/08/1987 | US4711686 A succession of self-adhering carried on back of release material |
| 12/08/1987 | US4711347 Protective envelope for optical data card |
| 12/01/1987 | US4709850 Mailer including return envelope and remittance stub combined in outer envelope |
| 11/24/1987 | US4709397 Tamper-evident envelope with indicia-forming cohesive layers |
| 11/24/1987 | US4709396 Tamper-evident envelope with indicia underlying cohesive layers |
| 11/17/1987 | US4706877 Windowed mailer with return envelope for remittance document, having return mail-to address exposed by removal of original mail-to label |
| 11/12/1987 | DE3711731A1 Dispatch bag |
| 10/28/1987 | EP0242972A2 Mailer including return envelope and remittance stub combined in outer envelope |
| 10/22/1987 | DE3613109A1 Wrapping for letters, in particular an envelope |
| 10/14/1987 | CN87202073U Safety envelope easy to open and seal |
| 10/14/1987 | CN87200243U Returnable envelope |
| 10/07/1987 | CN86209672U Easy-opening envelope |
| 09/30/1987 | CN86203582U Traveler's envelop |
| 09/16/1987 | EP0237215A2 Two-part mailer with return envelope |
| 09/08/1987 | CA1226562A1 Bone puncture resistant bag |
| 09/01/1987 | US4690392 Envelope configuration for use in a high speed copier with envelope printing capability |
| 09/01/1987 | US4690322 Resealable envelope |
| 08/25/1987 | US4688715 Two-way mailing envelope and method of making and addressing the same |
| 08/05/1987 | EP0230796A1 Two-way envelope |
| 07/28/1987 | CA1224760A1 Bag and closure therefor |
| 07/22/1987 | EP0229182A1 Envelope element, envelope blank and envelope formed from said envelope blank |
| 07/16/1987 | WO1987004134A1 Folded envelope and blank for forming same |
| 07/01/1987 | EP0226990A1 Envelopes constructed for ink jet printing |
| 06/30/1987 | US4676526 Coupon mailer |
| 06/17/1987 | CN86204826U Easily opened envelope |
| 06/17/1987 | CN86203234U Envelope for twice use |
| 06/10/1987 | EP0224631A2 Envelope, particularly for automatic enveloping |
| 06/02/1987 | US4669652 Two-way mailing envelope |
| 06/02/1987 | CA1222486A1 Mailer set |
| 05/27/1987 | CN86200423U Plastics-film envelop for repeated use |
| 05/26/1987 | CA1222267A1 Cut sheet mailer |
| 05/06/1987 | EP0220208A1 High security self-sealing mailing receptacle |
| 04/29/1987 | CN86206833U Envelope for repeated use |
| 04/15/1987 | CN86201816U Advantageous envelope |
| 04/09/1987 | WO1987002012A1 Protective envelope device for packaging fragile articles |
| 04/08/1987 | EP0217674A2 Improvements in continuous business forms |
| 04/07/1987 | CA1220174A1 Direct mail article with reply envelope and detachable reply devices visible within reply envelope |
| 04/07/1987 | CA1220063A1 Method of producing an envelope with pouch |
| 03/24/1987 | US4651920 Direct mail article with reply envelope and detachable reply devices visible within reply envelope |
| 03/18/1987 | EP0214141A1 Foldable letter for the dispatching thereof by post |
| 03/10/1987 | US4648860 Envelope with pouch and method of manufacture thereof |
| 03/10/1987 | CA1219015A1 Die cut window |
| 03/05/1987 | DE3531417A1 Letter envelope and production method and apparatus therefor |
| 02/25/1987 | CN86205366U Nonexpondable envelope |
| 02/17/1987 | US4644144 Document carrier envelope |
| 02/04/1987 | CN86203062U Quick-open type envelope |
| 02/03/1987 | US4640030 Combination envelope and display device |
| 01/15/1987 | WO1987000145A1 Envelope element, envelope blank and envelope formed from said envelope blank |
| 01/10/1987 | CN85101837A Packing laminate sheet |
| 01/07/1987 | CN86103909A Envelope pieces, envelope blanks and envelopes formed from the envelope blanks |
| 01/02/1987 | DE3522246A1 Universal dispatch pocket |
| 12/30/1986 | US4632427 Combined mailer and return envelope |
| 12/09/1986 | CA1215025A1 Postal module for confidential information |
| 11/20/1986 | EP0201960A1 Envelope and chain consisting of interconnected envelopes |
| 11/06/1986 | WO1986006349A1 High security self-sealing mailing receptacle |
| 11/05/1986 | EP0200456A2 Envelopes |
| 11/05/1986 | CN85204021U 信封 Envelope |
| 11/04/1986 | US4620633 Protective envelope device for packaging fragile articles |
| 10/28/1986 | US4619399 Multi-pocket envelope for floppy discs |
| 10/14/1986 | CA1212651A1 Two way envelope |
| 10/07/1986 | US4615480 Document sending system |
| 09/17/1986 | CN85204681U Envelope which can be used many times |
| 08/27/1986 | EP0192444A2 Labels and manufacture thereof |
| 08/26/1986 | US4607749 Easy open envelope |
| 08/26/1986 | US4607414 Device for tying an elongate object, for example a cable trunk |
| 07/29/1986 | US4602736 Two-way mailing envelope |
| 07/29/1986 | CA1208608A1 Continuous business form for automated mailing |
| 07/01/1986 | US4597591 Envelope with concealed message window |
| 06/17/1986 | US4595138 For multiple mailing |
| 06/17/1986 | US4595103 Envelope |
| 06/17/1986 | CA1206125A1 Door hanging envelope |
| 06/04/1986 | EP0183489A2 A security bag |
| 05/28/1986 | CN85200618U Envelope with a colour thread |
| 05/21/1986 | EP0181423A1 Courier bag combination for dispatching photographic works |
| 05/14/1986 | EP0181309A2 Envelope with detachable return address |
| 05/07/1986 | CN85203383U Envelope opened by a line |
| 05/06/1986 | US4586611 Business mailer |
| 04/16/1986 | CN85202520U Repeatedly usable envelope |