Composite mattress assembly
CA 2126302 C · Owner: La-Z-Boy Incorporated · Inventors: Calvert, William A. Jr.; Habegger, Douglas Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite mattress assembly adapted to be extended flat to provide a sleeping surface and to be folded for storage within a sofa is provided. The composite mattress assembly includes a composite pad assembly surrounded by an upper panel and a lower panel. A plurality of linear flange members are fixedly secured to the top edges of the upper panel and are also secured preferably by, staples, at preselected intervals along the lower edges of the composite pad assembly, or along the bottom surface of the composite pad assembly. A plurality of score lines are located upon one or both of an upper pad member and a lower pad member of the spring assembly to assist in the folding of the composite …
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 June 20, 1994 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2016.
- 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.