Improved security arrangements
CA 2319375 A1 · Owner: Hammersley, David George · Inventors: Hammersley, David George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door security arrangement comprises a frame member (10) mounted alongside an edge (16) of the door which is not hinged and which supports an elongate member (22) for movement to an extended position and one or two retracted positions. The elongate member (22) which is of a length equal to the length of the edge of the door alongside which is mounted movable between the extended and retracted positions by an operating bar (40) which is reciprocating along the longitudinal direction of the frame and includes guide channels (42, 142) for accommodating guide pins (34) mounted to the elongate member (22), movement of the pins (34) along inclined sections (48 144) of , the guide channel …
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 February 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2021.
- 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.