Sewer line trap priming assembly and antisiphoning conduit component therefor
CA 2174578 C · Owner: C.H. Perrott, Inc. · Inventors: Dowdican, Frank W.; Perrott, Charles H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic sewer line trap priming assembly including a gap type anti-siphoning conduit component. A shielded and directed jet at timed intervals directs priming water increments into a receiving funnel which communicates with the trap.
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 19, 1996 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2018.
- 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.