Electrical adapters
CA 2252925 A1 · Owner: Li, S.S. Chen · Inventors: Lee, Chiu-Shan; Li, S.S. Chen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical adapter having a face panel with different blade and grounding prong insertion holes for receiving different electrical plugs a, track at its back side adapted to receive one of a set of plug members a, plug unit and a socket unit arranged at two opposite lateral sides so that a plurality of electrical adapters can be connected in series by plugging the plug unit of one electrical adapter into the socket unit of another and an, electrical circuit consisting of a voltage regulator a voltmeter, a voltage, stabilizer, a power switch and a surge absorber.
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 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 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.