Infinitely adjustable offset vent connector
CA 2201956 C · Owner: Kenrick, Charles R. · Inventors: Andersen, John L.; Kenrick, Charles R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An extensible-contractible duct connector of slidingly interfittable elongated,partial duct elements, the partial duct elements having an open end telescopically interfit with an open end of the other partial duct element to cooperatively form a duct connector each having an outer closed end, each partial duct element having a side air flow opening directly adjacent the respective one of the closed ends to prevent significant dead air space between the opening and the adjacent closed end the partial duct elements having, slidably interfitting lateral edges with each other enabling sliding telescopic interfit that is incrementally variably adjustable between an extended condition with the …
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 April 4, 1997 and granted February 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 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.