| 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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| 07/14/1999 | CN2328596Y Novel standard envelope |
| 07/13/1999 | US5921463 Expandable photo print wallet with detachable divider |
| 07/06/1999 | US5918802 Special service envelope and a method for mailing a mailpiece requiring a special service |
| 07/06/1999 | CA2120814C Cellulosic substrate with transparentized portion and carbonless imaging |
| 06/30/1999 | CN2326539Y Electric banknote bundling machine |
| 06/23/1999 | EP0924139A1 Postal container for photographic prints |
| 06/23/1999 | CN2325323Y Envelope by self-making and folding having picture and words and easy to be opened |
| 06/22/1999 | US5913725 Secure mailer/receipt business form |
| 06/17/1999 | WO1999029582A1 Easy open envelope |
| 06/17/1999 | WO1999017994A3 A reusable envelope |
| 06/16/1999 | CN2324082Y Advertising envelope |
| 06/09/1999 | CN2322907Y Multifunctional folding envelope |
| 06/02/1999 | CN2321724Y Package bag |
| 05/26/1999 | EP0753462B1 Mailing envelope |
| 05/26/1999 | CN2320550Y Easy-to-open and- close envelope |
| 05/26/1999 | CN2320549Y Pressure-sensitive adhesive envelope |
| 05/26/1999 | CN2320548Y Standard envelope with postcode standard matrix |
| 05/19/1999 | CN2319337Y Envelope with pressure sensitive adhesive layer |
| 05/18/1999 | US5904383 Anti-theft bolt guard |
| 05/18/1999 | US5904290 Easy-to-open recyclable envelope |
| 05/14/1999 | WO1999022999A1 Security seal |
| 05/06/1999 | EP0683747B1 Printable diskette envelope form |
| 04/28/1999 | CN2316262Y Envelope made of paper composite bubble cloth |
| 04/21/1999 | CN2315058Y Easy open type environment protection envelope and post bag |
| 04/20/1999 | US5894986 Mailing envelope incorporating decorative transparency |
| 04/15/1999 | WO1999017994A2 A reusable envelope |
| 04/14/1999 | EP0907570A1 Tearable and re-usable document folder |
| 04/14/1999 | EP0731767B1 Envelope directly made of used paper |
| 04/14/1999 | CN2313866Y 信封 Envelope |
| 04/13/1999 | US5893514 Blank for a container, and a container having a closing and opening system |
| 04/01/1999 | DE19833809A1 Envelope with tear-off closure |
| 03/30/1999 | US5887780 Computer printable dual No. 10 envelope assembly |
| 03/24/1999 | CN2311447Y Easy-to-open envelope |
| 03/16/1999 | US5882116 Tamper indication device |
| 03/16/1999 | CA2088959C Two-way mailer and method and apparatus for producing the same |
| 03/10/1999 | CN2310023Y Post envelope made of paper composite pearl cotton |
| 03/02/1999 | US5875964 Reusable business envelope |
| 02/24/1999 | CN2308566Y Convenient envelope with glue |
| 02/17/1999 | CN2307746Y Practical easy opened envelope with tearing-strip |
| 02/17/1999 | CN2307745Y Easy opened envelope |
| 01/28/1999 | DE19731648A1 Envelope for posting or shipping of computer data media |
| 01/27/1999 | CN2305368Y Intelligent controlled banknote bundling machine |
| 01/27/1999 | CN2305367Y Convenient bag for soft package food |
| 01/27/1999 | CN1205963A Easy-to-seal and-unseal envelope with advertising vehicle function |
| 01/26/1999 | US5862978 Certified mailer envelope assembly |
| 01/26/1999 | CA2047512C Tamper-evident sealing system for envelope having a pattern of visibly distinct reflective characteristics thereon and method of making same |
| 01/23/1999 | CA2209086A1 Two way envelope |
| 01/20/1999 | CN2304607Y Envelope |
| 01/20/1999 | CN2304606Y Full-function pitch-row data inner bag |
| 01/19/1999 | US5860904 Special service mailpiece having an integral document section and a method for forming same |
| 01/07/1999 | DE19726988A1 Envelope with tear-open thread |
| 12/16/1998 | EP0884248A2 Envelope for insertion into bound publication |
| 12/16/1998 | CN2300597Y Easy open envelope |
| 12/16/1998 | CN2300596Y Self-adhesive stick type stamp, close-edge of envelope |
| 12/16/1998 | CN2300595Y Envelope capable of being used for two times |
| 12/16/1998 | CN2300594Y Easy closing and opening envelope |
| 12/16/1998 | CA2207962A1 Easy-to-open recyclable envelope |
| 12/09/1998 | EP0805767B1 Closure and seal device for sealing envelopes and plastic envelope supplied with the same |
| 12/09/1998 | EP0565591B1 Improvements in and relating to envelopes |
| 12/09/1998 | CN2299817Y Reusable envelope |
| 12/02/1998 | CN2299028Y Envelope |
| 12/02/1998 | CN2299027Y Envelope enabling postal codes being written normalization |
| 12/02/1998 | CN1200344A Ordinary envelope capable of using two times |
| 12/01/1998 | US5842629 Data card display pack for displaying/viewing a data card |
| 11/25/1998 | CN2298208Y Bank note binding machine |
| 11/05/1998 | DE19716559A1 Envelope especially for mailing documents |
| 11/04/1998 | CN2296314Y Convenient common envelope and stamp |
| 10/28/1998 | EP0873263A1 Continuous strip of detachably interconnected folded products |
| 10/27/1998 | US5826787 Two-way mailer envelope |
| 10/20/1998 | US5823423 Blank suitable for use in making an envelope |
| 10/20/1998 | US5823347 Device for storing photographic film negative cassettes |
| 10/14/1998 | CN2294223Y Tearing-strip type convenient envelope |
| 10/14/1998 | CN2294222Y 方便信封 Convenient envelope |
| 10/14/1998 | CA2202571A1 Rainproof information-holding envelope |
| 10/07/1998 | EP0710203B1 Window-envelope |
| 10/07/1998 | CN1040087C Method for making directly recycled envelope |
| 10/01/1998 | DE19713248A1 Envelope |
| 09/23/1998 | EP0865387A1 Envelope |
| 09/17/1998 | WO1998040282A1 Envelopes with detachable part |
| 09/15/1998 | US5806754 Negative and photo holder |
| 09/11/1998 | WO1998039225A1 Holder made from layered paper material, as well as method and device for producing a holder of this kind |
| 09/10/1998 | DE19709540A1 Manufacturing method of closure for folded postal packages |
| 09/09/1998 | CN2290553Y Envelope with adhesive |
| 09/09/1998 | CN2290552Y 信封 Envelope |
| 09/08/1998 | US5803352 Two way mailer |
| 09/01/1998 | US5799865 Flap closure and opening means for envelopes |
| 08/21/1998 | CA2229691A1 Two way mailer with postcard |
| 08/19/1998 | EP0591326B1 Security bags |
| 08/18/1998 | US5794409 Method of processing and stuffing an envelope |
| 08/11/1998 | US5791556 Easy opening envelope |
| 08/04/1998 | US5788377 Tamper-resistant envelope |
| 08/04/1998 | US5788144 Combined picture frame and mailer |
| 08/04/1998 | US5788074 Package for containing photo-prints with photographic film cassette |
| 07/28/1998 | US5786064 High strength, moisture permeability; protective clothing |
| 07/23/1998 | WO1998031536A1 Method of manufacturing a window mailing envelope |
| 07/21/1998 | US5782513 Security seal |
| 07/14/1998 | US5779137 For interoffice use |
| 07/02/1998 | WO1998028198A1 Two way mailer |
| 07/02/1998 | CA2247290A1 Two way mailer |
| 06/24/1998 | CN2284738Y Convenient envelope |