Return envelope mailer
CA 2049494 A1 · Owner: Moore Business Forms, Inc. · Inventors: Pennock, Thomas G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous business form assembly includes webs defining return envelopes within originating envelopes, where the webs of the originating envelopes are joined through openings in the return envelope webs. Flaps on both of the return envelope webs are formed of the material from which the openings are cut so that the flaps and openings are simultaneously created, paper waste is reduced and return envelope size increased.
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 August 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 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.