Light fixture
CA 2234311 A1 · Owner: Ilagan, Artemio · Inventors: Ilagan, Artemio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An attachment configuration for securing a circular light fixture cover to a correspondingly configured light fixture base, includes an outwardly extending helical flange around the base of the cover and a mating helical channel within the light fixture base. Preferably the flange and channel each form only a single pitch and extend around their respective components only 360 degrees, thereby allowing the fixture cover to be removed from or installed upon the fixture base with only a single turn. A stop may be provided in the assembly to prevent overtightening of the cover to the fixture base, and alignment markings may be provided to indicate the initial engagement point and fully engaged …
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 April 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 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.