Escachelle
CA 2215866 A1 · Owner: Duperron, Laurier · Inventors: Duperron, Laurier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention consists of a platform (shelf capable of bearing the weight of a worker) and a shelf mounted above at the worker's hand height these two entities being connected together by a system of manually controlled arms. It is a shelf platform system that is movable and attached to an ordinary ladder (rungs at 12" or 14" intervals the whole able to be raised and lowered as required. Current use enables painters carpenters plasterers, etc. to work at ease with their feet comfortably supported and major tools close at hand.
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 November 12, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2019.
- 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.