Composite mailer form
CA 2053207 C · Owner: Data Business Forms Limited · Inventors: Vigneault, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite mailer and a method of forming same. The mailer has a front and a back panel interconnected together along the top, bottom and side edges thereof by glue edge portions to form an envelope. The side edges are glue bonded along an edge strip thereof. One of the top and bottom edges has a fold glue flap formed integral with one of the front and back panels and folded over and glued along an edge of the other of the front and back panels to form a reinforcing flap to provide increased rigidity to the envelope for handling thereof by automatic mail sorting machines. One or more information-carrying sheets are interposed between the front and back panels and each has a connecting end …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 10, 1991 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.