Metal halide arc discharge lamp assembly
CA 2080418 C · Owner: Gte Products Corporation · Inventors: Tay, Thang Tu; Williamson, Glen P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metal halide arc discharge lamp includes a sealed lamp envelope, an arc tube located within the lamp envelope, a generally cylindrical light-transmissive shroud positioned around the arc tube, a frame comprising a single support rod extending between dome and neck regions of the lamp envelope, upper and lower clips for attaching the arc tube and the shroud to the frame, a resilient bulb spacer attached to a neck end of the frame and bearing against an inside surface of the lamp envelope for positioning the frame relative to the lamp envelope, and electrical leads for coupling electrical energy to the arc tube. The frame is mechanically supported within the lamp envelope in the neck region …
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 October 13, 1992 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2014.
- 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.