An adjustable alarm device for sliding doors and windows
CA 2438705 C · Owner: Allen, Robert · Inventors: Allen, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adjustable alarm device for windows and doors is installed between the door or window frame and the door or window sash. The longitudinal axis of the alarm device is preferably horizontal. When engaged movement of the door or window in an open direction will activate the alarm. The body of the alarm device is elongate tubular and telescoping. The body comprises an outer tube that receives an inner tube. The body of the alarm device may be locked in an extended position by way of a cam mounted on the inner tube and positioned within the body so that when the inner and outer tubes of the body are twisted about their longitudinal axis the cam body will engage the inner surface of the outer …
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 August 27, 2003 and granted November 8, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2025.
- 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.