| 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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| 05/25/1982 | CA1124218A1 Envelope |
| 05/25/1982 | CA1124217A1 Envelope assembly |
| 04/13/1982 | CA1121768A1 Carrier sheet business form assembly |
| 03/16/1982 | CA1120012A1 Locking envelope |
| 03/16/1982 | CA1119903A1 Folded paper edge opening process |
| 03/02/1982 | US4317538 Envelope |
| 02/09/1982 | CA1117905A2 Flexible, collapsible container having a stiffener member therein |
| 02/02/1982 | US4313558 Multiple pocket, expandable envelope, and blank and method for forming same |
| 02/02/1982 | US4313557 Envelope insert for magazines |
| 01/21/1982 | WO1982000129A1 Blank belt |
| 01/12/1982 | US4310117 Envelope |
| 01/12/1982 | CA1116137A1 Shipping form unit |
| 01/05/1982 | US4308988 Envelope |
| 01/05/1982 | US4308987 Remailable envelope |
| 12/29/1981 | CA1115243A1 Envelope assembly |
| 12/15/1981 | US4305506 Inner return envelope nested in outer envelope |
| 11/03/1981 | US4298158 Packaging element for packaging sheet material |
| 10/13/1981 | US4294400 Non-gusseted expansible envelope |
| 09/30/1981 | EP0036509A1 A method of opening envelopes |
| 09/22/1981 | US4290547 Reclosable envelope and method of manufacture |
| 09/15/1981 | CA1109031A2 Stationery having snap-open envelope with remailable portion |
| 09/08/1981 | US4288028 Remailable envelope |
| 08/18/1981 | US4284230 Mailing assembly incorporating plural offer send and return mailing pieces |
| 08/11/1981 | US4283003 Reclosable envelope |
| 07/07/1981 | CA1104529A1 Continuous mailer |
| 06/30/1981 | CA1104104A1 Slide calculator and method |
| 02/17/1981 | US4250999 Tear-off flange for an article |
| 01/20/1981 | US4245775 Two-way postal card and envelope |
| 01/13/1981 | US4244511 Specialty envelope serving as a picture frame |
| 01/07/1981 | EP0021380A1 Package of adhesive foil for ceramic tiles and method of filling the package |
| 01/07/1981 | EP0020484A1 Folded paper edge opening process |
| 12/23/1980 | US4240577 Locking envelope |
| 12/10/1980 | EP0020313A1 Envelope and a method for its manufacture |
| 11/18/1980 | US4234122 Reclosable envelope |
| 10/28/1980 | US4230262 Continuous strip of sealed envelopes with inner documents |
| 09/23/1980 | CA1086272A1 Stuffed sealed envelope assembly |
| 09/16/1980 | US4222216 Opening of envelope with darkened edges |
| 09/12/1980 | EP0006917A4 Reversible envelope. |
| 09/09/1980 | US4221161 Method of forming a double pocket envelope |
| 08/20/1980 | EP0014446A1 Opening of envelope with darkened edges |
| 08/05/1980 | CA1083096A1 Stubless multi-part assembly |
| 07/15/1980 | US4212396 Envelope assembly |
| 07/15/1980 | CA1081665A1 Adhering method |
| 07/01/1980 | US4210250 Reversible envelope |
| 06/17/1980 | US4207984 Decorative envelope packet |
| 06/10/1980 | CA1079322A1 Business forms constructed from coated single sheets selectively folded |
| 05/27/1980 | US4204600 Dual pocket envelope |
| 04/17/1980 | WO1980000687A1 Folded paper edge opening process |
| 04/02/1980 | EP0009265A2 A method of severing cellulosic paper at a fold therein |
| 03/25/1980 | US4194631 Machine sortable mailing envelope |
| 03/25/1980 | US4194342 Degradation by organic acid |
| 03/18/1980 | US4193501 Envelope assembly |
| 03/11/1980 | US4192448 Self-sealing closure for mailing bags |
| 03/11/1980 | US4192447 Multi-compartment envelope |
| 02/26/1980 | US4190162 Stationery having snap-open envelope with remailable portion |
| 02/26/1980 | US4190161 Compartmented envelope |
| 02/06/1980 | EP0007388A1 A continuous mailer |
| 02/05/1980 | CA1071157A1 Continuous business forms envelope assembly |
| 01/23/1980 | EP0006917A1 Reversible envelope |
| 01/22/1980 | US4184628 Mailing assembly |
| 01/09/1980 | EP0006282A1 Improvements in or relating to envelope assemblies |
| 12/25/1979 | US4180168 Two-way envelope |
| 12/13/1979 | WO1979001059A1 Grammophone record sleeve |
| 11/13/1979 | CA1066236A1 Stationery having snap-open envelope with remailable portion |
| 10/16/1979 | USRE30114 Continuous forms assembly |
| 10/09/1979 | CA1063981A1 Envelope and form assembly |
| 09/11/1979 | CA1062208A1 Packaging bag of thermoplastic synthetic plastic film and a method of fabrication |
| 09/11/1979 | CA1062117A2 Microfilm jacket micro film feeding device and process |
| 09/04/1979 | US4166539 Envelope assembly |
| 09/04/1979 | US4166538 Easy opening envelope |
| 08/21/1979 | CA1060853A1 Mailing pouch |
| 07/31/1979 | CA1059470A1 Continous envelope assembly |
| 07/24/1979 | CA1059077A1 Apertured mailing card and method of using |
| 07/17/1979 | CA1058579A1 Continuous business forms assembly with anti-tenting means |
| 06/12/1979 | US4157759 Continuous mailer |
| 05/15/1979 | CA1054644A1 Sealed business form assembly |
| 05/15/1979 | CA1054579A1 Continuous forms assembly |
| 05/08/1979 | US4153163 Envelope and form assembly |
| 04/24/1979 | CA1053193A1 Stubless multi-part assembly |
| 04/17/1979 | US4149667 Dual compartment envelope |
| 04/17/1979 | CA1052743A1 Envelope assembly |
| 04/10/1979 | US4148430 Business form |
| 04/05/1979 | WO1979000164A1 Reversible envelope |
| 02/20/1979 | US4140317 Containerized greeting card and game toy |
| 02/13/1979 | CA1048452A1 Self-sealing envelope and method of making same |
| 02/06/1979 | US4137958 Polypropylene bag for use in an automatic filling process |
| 01/09/1979 | CA1046024A1 Return envelope for mailer |
| 12/12/1978 | US4129214 Two compartmented envelope |
| 09/19/1978 | US4114799 Solicitation envelope carrier |
| 09/05/1978 | CA1037915A1 End construction for bellows type envelopes and the like |
| 08/22/1978 | US4108351 Adhering method |
| 08/01/1978 | US4103821 Shipping envelope |
| 07/25/1978 | US4102489 Business reply form |
| 06/20/1978 | US4095695 Stuffed sealed envelope assembly and method of making |
| 06/06/1978 | US4093074 Envelopes |
| 05/30/1978 | US4091987 Carrier sheet business form assembly |
| 05/16/1978 | US4089419 Reversible envelope |
| 05/16/1978 | US4089418 Returnable mail envelope |
| 04/18/1978 | US4084741 Continuous form multiple ply envelope assembly |
| 04/18/1978 | US4084696 Bind-in insert |