Coring rod re-alignment tool
CA 2136458 C · Owner: Atkins Underground L.P. · Inventors: Brown, David M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The coring rod realignment tool of the present invention is comprised of a body that has a fixed arm which protrudes beyond one of its sides and a sliding arm that protrudes beyond an opposite side. The slideable arm can be positioned so that its end that protrudes out from the body is in horizontal alignment with the protruding portion of the fixed arm and it can be moved so that its end that protrudes out from the body is not in horizontal alignment with the end of the fixed arm that protrudes from the body but is parallel to that end. The portion of the fixed arm and the portion of the slideable arm, that protrudes out from the body is coupleable a coring rod of the type used in …
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, 1994 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2016.
- 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.