Subterranean liquid distribution apparatus
CA 2262207 A1 · Owner: Adamson, Karl · Inventors: Adamson, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The subterranean liquid distribution or liquid routing apparatus utilizing a housing having a wall portion forming an inner chamber. The housing includes inner and outer surfaces the, former defining the inner chamber of the housing. A plurality of apertures in the wall portion of the housing permit communication with the inner chamber and allow liquids to pass either into or out of the inner chamber. At least a pair of protuberances extend from the inner surface of the wall portion of the housing in contact one another to prevent collapsing of the housing chamber. An opening is also found to the housing chamber in spaced relationship to the plurality of apertures which generally serves as …
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 February 18, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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.