Tree supported structure
CA 2199560 A1 · Owner: Jarman, Philip · Inventors: Jarman, Philip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tree-supported structure includes a first tree anchor with a chain extendable about a tree. There is a tightening mechanism for tightening the chain about the tree until the chain intents the tree. There is a first platform extending about the tree and connected to the anchor. Preferably there is a second tree anchor spaced-apart above the first tree anchor and a plurality of first elongated tension members extending between the outer ends of the first elongated members and the second tree anchor. There may be a second platform below the first platform. A third tree anchor is located below the first tree anchor and level with the second platform. The second platform is connected to the …
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 March 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2019.
- 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.