Central locking system for buildings
CA 2406781 A1 · Owner: Armitage, Tim · Inventors: Tiller, Matthew David Arthur; Darcy, John Patrick; Armitage, Tim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A central locking system for a building having at least one window or door the system comprising a central control unit in communication with a storage means for retaining pressurised fluid, the storage means being in fluid communication with at least one locking mechanism operable in response to a signal from the central control unit to the storage means to move between an inoperative position in which the opening and closing of the associated door or window is unimpeded and an operative position in which the opening and closing of the door or window is impeded.
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 April 18, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2023.
- 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.