Arc discharge lamp having cementless right-angle base members
CA 2092607 A1 · Owner: Hough, Harold L. · Inventors: Haraden, Thomas; Hough, Harold L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arc discharge lamp including a two-piece base member consisting of a main housing and a cap disposed at opposite ends of the lamp envelope. The main housing of the base member includes elongated slots to enable the housing to expand outwardly in response to positioning of the press seal. At least one internally-protruding segment formed in the housing is positioned within a detent formed in the press seal region of the lamp. Following positioning of the press seal, the cap is secured to the main housing. The base member is thus secured to the ends of the lamp envelope without the need for basing cements or the like.
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 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2015.
- 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.