A fluorescent lamp and method for attaching a base member to an end of same
CA 2411560 A1 · Owner: Cunkelman, Gary T. · Inventors: Cunkelman, Gary T.; Laird, Richard C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluorescent lamp includes a glass envelope having a sealed end portion, a base shell member of a cup-shape configuration adapted to engage the envelope end portion and a collar of, shrink wrap material disposed around the envelope end portion and sides of the base shell member, the shrink wrap material being shrunken and compressing against the envelope end portion and the base shell member, to fix the base shell member on the envelope end portion.
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 November 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2024.
- 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.