Telescopic vent pipe for waste liquids
CA 2265361 A1 · Owner: Parsons, Llewellyn Bertram · Inventors: Parsons, Llewellyn Bertram
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A waste pipe is provided to transport waste liquids from one site to another, one of the sites being movalbe with respect to the other. The waste pipe is generally rigid over its length but has a flexible section at each end so that its position may be angularly adjusted. The pipe is adjustable in an axial direction by means of telescopic sections, and the flexible sections have essentially smooth inner surfaces which may be easily washed down. +
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 March 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2021.
- 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.