A lock
CA 2305474 A1 · Owner: Ladder Lock Industries Pty Limited · Inventors: Wren, David; Anderson, Carl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A locking system including: (a) a support including a first arm and a second arm spaced from, and extending substantially parallel to the first arm, preferably such that the support comprises a U-shaped structure:(b) a retaining member movably mounted on the first arm including a bridge, member capable of extending to the second arm; (c) engagement means movably mounted on and capable of releasably engaging the first arm the, engagement means preferably being in the form of a planar plate with an aperture through which the first arm travels; and (d) release means for releasing the engagement means, the release means being movable relative to the support or the retaining member or both …
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 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2022.
- 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.