Sewage oxygenating device
CA 1304176 C · Owner: Varisco, Giuseppe · Inventors: Varisco, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The device comprises a tubular element having at its ends first and second enlarged portions. Within the first enlarged portion is located a neck-like element adapted for connection to a sewage circulation conduit and placed concentrically within a second tubular element defining an air intake. Openings are provided in the lateral surface of the portion to enable air to be introduced into the tubular element to blend with sewage flowing through the neck-like element.
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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
- 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.