Spike
CA 2075574 A1 · Owner: Cosgrove, Barry · Inventors: Cosgrove, Barry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spike for anchoring a post to the ground the spike including an elongated, member having a fold line extending from one end of the elongated member which has a point for facilitating the entry of the elongated member into the ground to another end of the elongated member, a clamping member co-operating with the other end of the elongated member to define a socket for receiving the post and a fastener for fastening, the post to the spike.
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 August 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2014.
- 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.