Drainpipe
CA 1188476 A · Owner: Busat, Robert · Inventors: Busat, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The discharge end of downspouts for eavestroughing often constitute nuisances when mowing the lawn. By placing a foldable extension at the bottom end of the vertical portion of the downspout the problem is solved. The foldable extension is integral with a coupler sleeve, and a bracket is provided on the sleeve for releasably retaining the extension.
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 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
- 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.