Three pole plug
CA 2083254 A1 · Owner: Su, Tun Lih · Inventors: Su, Tun Lih
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a three-pole plug of which the junction sleeve and the terminal holder are not individually and separately injection molded but are integrally formed into one piece at the very beginning. The sleeve has three bottom holes formed on its bottom surface and the terminal holder has three slide grooves formed on its one side, communicable with the sleeve via the three bottom holes on bottom surface of the sleeve. Each of the three slide grooves has a vertically projected flange and a terminal passage located in front of the flange and leading to one corresponding bottom hole on bottom surface of the sleeve. The terminals according to the present invention each is …
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 November 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 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.