Saw chain
CA 2294368 A1 · Owner: Sundstrom, Erik · Inventors: Sundstrom, Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Saw chain comprising center links and side links where the underside of the , side links is provided with two heels (13 14) with bottom surfaces aligned , with the edge rails of a guide bar and at least one bottom surface has a recess (16, 17), each recess having one open end (18) towards the front and , each recess becoming shallower and narrower towards a closed rear end (19) located in the middle third of the heel.
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 June 8, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2020.
- 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.