Chainbar
CA 2003754 A1 · Owner: Pappanikolaou, Sofia · Inventors: Pappanikolaou, Sofia; Pappanikolaou, Sofia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is called a "Chainbar" because it may be quickly and easily adjusted to have the characteristics of a flexible chain and/or that of a rigid bar; and may be easily folded into any size rectangular solid of equal volume. It consists of a series of interconnected links which are flexible, like a chain, but have means for restricting the movement between the links, to form a rigid bar. If the Chainbar is in the form of a flexible chain, and is passed through a tube which may be less than one link long, and has proper activating tabs the, movement between links will be sequentially restricted to form a rigid bar, adjustable in one link increments. The Chainbar has ubiquitous uses. …
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 November 23, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2011.
- 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.