Ground working device for powered hand-held rotary devices
CA 2181780 C · Owner: Kiemele, Lisa G. · Inventors: Kiemele, Lisa G.; Zaharia, Paul M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ground working device for powered hand-held rotary devices comprises four resilient ground working members mounted upon and extending downwardly from a mount and comprises a weighted hub which along with the mount is detachably attached to the bottom of a rotatable shaft of a rotary device for rotation therewith and comprises a flexible shroud fastenable to a housing of the rotatable shaft and shrouding the ground working members to prevent debris from being sent airborne and possibly injuring the user or others nearby. The ground working device conveniently and easily tills, weeds, and cultivates the ground especially lawns and gardens.
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 July 22, 1996 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2018.
- 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.