Portable fold-up ladder
CA 1183110 A · Owner: Andral Corporation · Inventors: Marques, Salvador Alimbau
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention involves a portable ladder that may be folded in a compact manner and which, opens up into a substantially rigid upright ladder. The ladder is made up of a multiplicity of u-shaped modules that fold one within the other. Each of said modules has a locking means to lock in position when the ladder is to be used.
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
- Granted February 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2002.
- 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.