Chair
CA 2097737 C · Owner: Van Deursen, Leonardus Laurentius Joseph Maria · Inventors: Van Deursen, Leonardus Laurentius Joseph Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chair provided with at least one leg supporting the chair on the ground, with a back supported by said leg(s) and with a seat supported by said leg(s), whereby said seat is pivotable with respect to said back about an at least substantially vertical axis wherein by means, of driving means said seat is pivotable to the left and to the right through maximally 10° from a central position.
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 4, 1993 and granted September 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2015.
- 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.