Anti-leak an anti-contact christmas lamp
CA 2199587 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
An anti-leak and anti-contact Christmas lamp includes a bottom cap, a tubular socket a coil spring, an insulating disc and an anti-lead gasket. The bottom cap has curved recesses abutting each other on a projecting portion between two parallel walls and ridges between two abutting curved recesses for laying wires therein. The socket has a bottom annular wall with two opposite openings each having curved recesses to correspond with the curved recesses of the bottom cap so as to tightly pressing wires therein. the spring and the insulating disc are placed in the socket with the, disc pressed down by a lamp and with the spring compressed down to let the poles of the lamp contact with two …
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 March 10, 1997 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 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.