| 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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| 07/13/1989 | DE3744596A1 Tearing thread for envelopes |
| 07/12/1989 | EP0323706A2 Device for the closing and sealing of envelopes, envelope and envelope with closing and sealing device |
| 07/11/1989 | US4846348 Two-way mailing envelope for an audio cassette |
| 06/21/1989 | CN2039673U Envelop |
| 06/20/1989 | US4840306 Fold-over mailer with side-open return envelope with slittable edge |
| 06/13/1989 | EP0252129A4 Folded envelope and blank for forming same. |
| 06/13/1989 | CA1255641A1 Personalised multi-sheet data carrying assembly and method of forming same |
| 06/06/1989 | US4836382 Photo print envelope containing coupon pouch |
| 05/31/1989 | CN2038484U Easily-opened envelope |
| 05/31/1989 | CN2038483U Envelope with zip code blanks |
| 05/10/1989 | CN2037347U Easy opened envelope |
| 05/09/1989 | US4828104 Personalized mailing envelope or carrier and method of enclosing a personalized letter in a personalized mailing envelope or carrier |
| 05/03/1989 | DE3735408A1 Envelope with incorporated letter opener |
| 05/03/1989 | CN2036935U Repeated utilization of envelope |
| 04/25/1989 | US4824142 Continuous business forms |
| 04/12/1989 | CN2035737U Repeatedly used return-envelope |
| 04/11/1989 | US4819807 Tear-strip opening envelope apparatus |
| 04/06/1989 | WO1989002714A1 Hinged multiple coat-hanger |
| 04/06/1989 | DE3830456A1 Pivotable multiple clothes hanger |
| 04/06/1989 | DE3731903A1 Dispatch envelope made of paper |
| 04/05/1989 | CN2035340U Easy open postal container |
| 04/04/1989 | US4817860 Fragrance releasing envelope |
| 03/28/1989 | US4815654 Reusable envelope |
| 03/08/1989 | EP0306131A2 Multiple-part business form |
| 03/07/1989 | US4809904 Envelope element, envelope blank and envelope formed from the envelope blank |
| 03/01/1989 | EP0304884A1 Self-sealing envelope |
| 02/28/1989 | US4807806 Display-mailer assembly |
| 02/28/1989 | US4807805 Dual envelope sheet-fed assembly |
| 02/14/1989 | US4804135 Continuous strip envelopes |
| 02/09/1989 | WO1988009751A3 Envelopes, mailing bag or similar |
| 02/09/1989 | WO1988009260A3 Method affording an easy opening device for nonwoven thermoplastic fiber envelopes |
| 02/08/1989 | CN2032181U Envelope container with code used conveniently |
| 01/31/1989 | US4801074 Sealed letter |
| 01/25/1989 | CN2031383U Out-package for turnover of postal parcel |
| 01/24/1989 | US4799618 Bifolded mailer with insert |
| 01/11/1989 | EP0298108A1 Envelope assembly |
| 01/03/1989 | US4795035 Envelope |
| 12/28/1988 | EP0296301A1 Inviolability seal for mail-containers and the like |
| 12/28/1988 | CA1247564A Negotiable instrument mailing device |
| 12/20/1988 | CA1247062A1 Envelope configuration for use in a high speed copier with envelope printing capability |
| 12/15/1988 | WO1988009751A2 Envelopes, mailing bag or similar |
| 12/15/1988 | DE3718009A1 Briefumschlag, versandtasche oder dgl. Envelope, shipping bag or the like. |
| 12/14/1988 | CN87206032U Dual purpose envelope |
| 12/13/1988 | US4790475 Reusable stationery carrier |
| 12/01/1988 | WO1988009260A2 Method affording an easy opening device for nonwoven thermoplastic fiber envelopes |
| 11/23/1988 | EP0291897A2 Paper article consisting of two or more layers |
| 11/23/1988 | CN88200150U Envelope with adhesion agent |
| 11/22/1988 | CA1245243A1 Business mailer |
| 11/22/1988 | CA1245194A1 Flip die cut label for folded mailer |
| 11/15/1988 | CA1244803A1 Die cut window mailer with self-imaging sheet |
| 11/09/1988 | CN88201377U Envelope with zipper |
| 11/02/1988 | CN87213677U Envelopes |
| 11/01/1988 | US4781322 Kit for direct mail solicitation |
| 11/01/1988 | US4781296 Method affording an easy opening device for nonwoven thermoplastic fiber envelopes |
| 10/25/1988 | US4779792 Return mailer assembly and related process |
| 10/18/1988 | US4778101 Two-way envelope |
| 10/18/1988 | US4778100 Direct-mail advertising package with acceptance form and return mailer envelope |
| 10/11/1988 | US4776510 Conventional return envelope in a two-part mailer and method of assembly |
| 10/11/1988 | CA1243002A1 Mailer construction for optical postal sorting machine |
| 10/04/1988 | US4775095 Remailable envelope |
| 10/04/1988 | US4775094 Loose insert mailer |
| 09/28/1988 | CN87207609U 软包装 Flexible Packaging |
| 09/14/1988 | EP0282328A2 Two part mailer with return envelope |
| 09/13/1988 | US4770337 Web-type multiple-part business form stock having pre-glued but non-adhered cross-web heat seal glue lines designed for activation to seal outgoing envelopes after printing-type personalization of potential froms thereof |
| 08/23/1988 | US4765485 Re-usable mailer package |
| 08/17/1988 | CN87212145U Envelope with a special unsealing hole |
| 08/09/1988 | US4762271 Compartmented and separable mailing envelope |
| 08/03/1988 | EP0276989A2 Envelopes |
| 08/03/1988 | CN87206784U Envelope for easy seal and open |
| 08/02/1988 | CA1239908A1 One-piece two-way mailer unit |
| 07/28/1988 | WO1988005410A1 Dual envelope sheet-fed assembly |
| 07/27/1988 | EP0276069A2 Vapor phase epitaxial growth of iron-doped, indium-based, compound group III-V semiconductors |
| 07/26/1988 | US4759643 Self-sealing envelope |
| 07/13/1988 | EP0274225A2 Windowed mailer with return envelope for remittance document, having return mail-to address exposed by removal of original mail-to label |
| 07/05/1988 | US4755412 Cutting away portion of stiffening paper in zones spaced across web, applying layer of thermoplastic material, dividing web by making longitudinal cuts in said zones |
| 05/31/1988 | US4747618 Labels and manufacture thereof |
| 05/25/1988 | EP0268410A2 Return envelope sealing flap construction |
| 05/17/1988 | US4744509 Foldable letter that can be mailed |
| 05/17/1988 | US4744508 Continuous form mailer assembly |
| 05/17/1988 | CA1236803A1 Mailer construction |
| 05/05/1988 | DE3637422A1 Envelope |
| 05/03/1988 | US4741475 Mass mailer |
| 04/28/1988 | DE3744621A1 Reusable mailing envelope |
| 04/27/1988 | CN87209528U Multifunctional envelope |
| 04/20/1988 | CN87208381U Common envelope capable of using twice |
| 04/19/1988 | US4738391 Temporarily and permanently sealable envelope or the like |
| 04/19/1988 | US4738390 Magnetic closure device for envelope or the like |
| 04/12/1988 | CA1235097A1 Tab open mailer |
| 04/06/1988 | EP0262838A2 Conventional return envelope in a two-part mailer and method of assembly |
| 04/06/1988 | CN86106571A Bag coated with binding agent |
| 03/30/1988 | EP0261844A1 Envelope |
| 03/30/1988 | EP0261843A2 Bifolded mailer with insert |
| 03/30/1988 | CN86106273A Paper bag coated with adhesive |
| 03/29/1988 | US4733817 Envelope system with multiple pockets |
| 03/16/1988 | CN87209332U Case for communication tape |
| 03/16/1988 | CN87208467U Convenient envelope with implicit glue |
| 03/15/1988 | US4731048 Method of making envelope and letter assembly with business letter fold |
| 03/15/1988 | US4730768 Remailable envelope |
| 03/15/1988 | US4730767 Letter sheet with return envelope |
| 03/10/1988 | WO1988001567A1 Tear strip opening device |