Pliers
CA 2252003 A1 · Owner: Chang, Jong-Shing · Inventors: Chang, Jong-Shing
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pliers is composed of a first long member and a second long member having a middle neck portion which is provided with a long slot. Pivoted to the first long member is a stopping member which is located in the, long slot and provided with a serrated portion engageable with teeth of the long slot. A first spring is fitted over a second support arm which forms an angle with a first support arm. A second spring is fastened at one end thereof with a grip end of the first long member and at another, end thereof with a grip end of the second long member. The first and the second long members are forced by the springs to open up completely in the absence of an external force exerting on 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 October 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 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.