Shingle system and fastening strip
CA 2218235 C · Owner: Andex Metal Products Ltd. · Inventors: Nicholson, Joseph R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shingle system comprising a fastening strip (14) and a plurality of shingles (12). The fastening strip (14) includes a top flange portion (36) and a fastener portion (44). A gasket (48) is located along a bottom surface of the fastening portion (44). The plurality of shingles (12) each include top and bottom edges and opposing side edges. The bottom edge includes an underturned flange (34) for engaging the top flange portion (36) of the fastening strip (14). Overturned or underturned flanges are provided on the side edges to connect adjacent shingles along the sides. In a further embodiment the , shingles comprise first and second shingle configurations where the first shingle …
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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
- Filed April 12, 1996 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2018.
- 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.