Wrench with guiding means at the jaws
CA 2411523 A1 · Owner: Wu, Arthur · Inventors: Wu, Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wrench has a handle, a first jaw and a second jaw. The first jaw and the second jaw each has a holding face and two sidewalk respectively connected to the holding face at two sides. Each edge between the holding faces and the sidewalk of the first and the second jaws respectively has a guiding portion thereon. The guiding portions are chamfer or fillets. Whereby the distance between the interior sides of the guiding portions which are, connecting to said holding faces of said first jaw and said second, jaw is smaller than the distance between the exterior sides of said guiding portions, which are connecting to said sidewalls of said, first jaw and said second jaw. The guiding portions …
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 December 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2024.
- 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.