Sewer chimney system
CA 2113236 A1 · Owner: D'Alessandro, Nicholas · Inventors: D'Alessandro, Nicholas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Applicant: Nicholas D'Alessandro, For: Improved Sewer Chimney System ABSTRACT OF DISCLOSURE, A sewer chimney system for stabilizing and protecting a chimney pipe interconnecting a service pipe and a main sewer line includes a base for bridging a main sewer line, the base having a hole for accommodating the chimney pipe rising from the main sewer line; a hollow casing vertically mounted on the base and having a lower open end aligned with the hole in the base for receiving the chimney pipe; and having an upper open end for receiving fill about the chimney pipe the case including a lateral hole for, receiving a service pipe for interconnection with the chimney pipe and a device for, attaching …
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 January 11, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2016.
- 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.