Method and apparatus for installing a multi-strand anchorage system
CA 2247302 C · Owner: Sorkin, Felix L. · Inventors: Sorkin, Felix L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anchorage apparatus (10) for a multi-strand anchorage system including an anchor plate (12) having a front side (22) and a back side (20) a plurality , of tendon-receiving passageways (14 16) formed in the anchor plate (12), and a hole (18) formed in the anchor plate (12) and extending so as to open on the front side (22) and back side (20) of the anchor plate (12). Each of the tendon-receiving passageways (14, 16) opens on the front side (22) and opens on the back side (20) of the anchor plate (12). Each of the tendon-receiving passageways (14, 16) tapers so as to have a narrow diameter adjacent the back side (20) of the anchor plate (12) and a wide diameter adjacent the front …
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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 14, 1997 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2019.
- 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.