Insulated closure panel
CA 1237652 A · Owner: Martinray Industries Ltd. · Inventors: Labelle H.M. Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An insulated panel for a rolling closure having a metallic outer wall and a thermoplastic inner wall. The outer and inner walls are connected together by side walls. One side wall has a male hinge member and the other side wall has a female hinge member. Both hinge members are composed of metallic and thermoplastic material. Insulation is provided in the panel extending between the side walls.
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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 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.