Grass treatment apparatus
CA 1330738 C · Owner: Warke, William Lyle · Inventors: Warke, William Lyle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lawn treatment apparatus comprises an open-bottomed support body (10) having three treatment implements in the form of spiking devices (!!@) or brushing/sweeping devices adapted to move through the open bottom. Means are carried by the support body (10) to drive the treatment implements (12) with a combination of vertical and horizontal oscillations. Biasing means (14) are provided normally to hold the implement in a vertical attitude or substantially so when stationary.
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 July 19, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 19, 2011.
- 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.