Root control planter
CA 1069698 A · Owner: Albrecht, Leonard N. · Inventors: Moorman, Maurice D.; Albrecht, Leonard N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tree planter which prevents the roots of a tree from cracking a nearby sidewalk, including a planting container which is buried in the ground with a young tree therein the container, having sidewalls of slick and impenetrable material such as plastic, and with the sidewalls sloping outwardly so that the open, bottom of the container is larger than the top to help deflect, roots downwardly so that when they begin growing outwardly they grow at a level far below the sidewalk. -1-
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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.