Compact storable escape ladder
CA 2415465 A1 · Owner: Harris, Tony J. · Inventors: Harris, Tony J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the invention, 'compact portable escape ladder' providing an escape ladder , for emergency use from a building window, with distinct advantages of being compact and storable, portable and, light, and substantially rigid in use against a building wall. In use the , ladder is dependant of a, frame set saddle fashion over an opening. From the frame pivots the top rung assembly, comprising of a horizontal rung with a vertical rail connecting at each end which has at its top an, eye formed vertically connecting the frame above. Suspended downward a series , of similar rung, assemblies each connected by a eye formed horizontally at the top of each rail, encircling the rail, of the next rung …
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 December 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2024.
- 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.