Water-tight christmas tree light
CA 2210423 A1 · Owner: Cheng, You-Jen · Inventors: Cheng, You-Jen; Cheng, Tzu-Ling
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-tight Christmas tree light which includes a lamp socket having an outward flange around one end thereof, an outer projecting wall raised around the periphery, and an outside annular groove around the periphery between the outward flange and the outer projecting wall; a lamp bulb fastened to the lamp socket; and a rubber sealing cap having a tapered hollow, cylindrical cap body mounted on the lamp socket around the lamp bulb to seal the gap between the lamp socket and the lamp bulb, an inward top flange pressed on the periphery of the lamp bulb, a chamfered bottom edge forced into the outside annular groove of the lamp socket, an inside annular flange stopped against the periphery of …
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 July 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 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.