Roof decking
CA 1196167 A · Owner: Byson Holdings Ltd. · Inventors: Haagenson, Orville (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a roof decking for use in supporting a built-up roof structure said roof decking, being formed by a plurality of abutting panels laid across a plurality of laterally spaced, substantially parallel purlins supporting the roof structure, adjacent longitudinal edges of the panel extending between the purlins and adjacent lateral edges of the panels extending along the purlins each said, panel comprising a framing including longitudinal linear rigid edge members having a lower faceboard fixedly attached thereto and an upper faceboard fixedly attached thereto to define therewith a central core cavity which is filled with a fire resistant heat insulation material …
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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 November 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2002.
- 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.