Drainage element
CA 1267853 C · Owner: Enpoco Canada Ltd. · Inventors: Emberson, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drainage element is provided comprising a generally cylindrical body into which a removable gasket is inserted in the lower end thereof. Located above the gasket are pipe stops which project inwardly from the interior wall of the body. The drainage element is useful with a drain pipe which is inserted into the gasket to butt the pipe stops or the gasket can be removed, the pipe stops broken away from the body and the drain used with a drain pipe of which the upper edge butts the lower edge of the body.
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
- Granted April 17, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2007.
- 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.