Egg carton
CA 1237396 A · Owner: Emery, Roy W. · Inventors: Emery, John R.; Emery, Roy W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moulded container for frangible articles comprising a tray formed with rows of cavities, a cover hinged to the tray along a hinge line, the cavities being of lesser cross section adjacent their bottom than their top whereby the outside walls of the adjacent cavities merge in hollow posts therebetween said tray, having a continuous rim along its front edge said cover having a, continuous rim along its front edge the continuous rim of the cover, meeting the continuous rim of the tray when the cover is closed upon the tray, at least one of said hollow posts adjacent the front edge of the tray being a locking post, said locking post extending above the front rim of the tray and having side …
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
- Granted May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.