Christmas lamp socket
CA 2204336 C · Owner: Huang, Shun-Feng · Inventors: Huang, Shun-Feng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Christmas lamp socket includes a housing a lamp, base with a lamp fitted therein and inserted in the housing completely. The housing has two aligned grooves in a bottom end for a power wire to be fitted and positioned therein with a proper tenseness so as to enable the sockets kept upright to the wire and thus to prevent rain from flowing in the housing and the lamp base and from consequent short circuit.
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 May 2, 1997 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 2, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 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.