Method of and apparatus for making mineral insulated cable
CA 2008682 C · Owner: City Electrical Factors Ltd. · Inventors: Gill, Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for making mineral insulated cable in which preformed blocks of mineral insulant are continuously supplied, each of the blocks having at least one groove therein and having a first end and a second end. The blocks are continuously disposed in at least one column, with the first end of each of the blocks in the column abutting against the second end of an adjacent one of the blocks in the column, and with the at least one groove of each of the blocks in the column in alignment with the at least one groove of the adjacent one of the blocks in the column, to form a continuous groove extending over the length of the column of blocks. At least one conductor is continuously …
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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 January 26, 1990 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2012.
- 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.