Electric transformer
CA 2195286 C · Owner: Yeung, Peter · Inventors: Yeung, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical transformer comprises a housing having a back plate provided with an upper insertion set and a lower insertion set. The upper insertion set has a first inserting member, a second inserting member and a ground inserting member. The lower insertion set has a third inserting member a fourth inserting member and a ground inserting member. The housing further has a front plate provided with a first insertion set having a first inserting hole a second inserting, hole and a ground inserting hole. The first inserting hole is connected with the second inserting member of the upper insertion set. The second inserting hole is connected with the fourth inserting member of the lower …
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 January 16, 1997 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2019.
- 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.