Short-arc discharge lamp with electrode-supporting members in lamp neck
CA 1052438 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Mathijssen, Petrus J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Rare gas-filled short arc discharge lamps comprise in the neck-shaped portions of the lamp envelope a supporting member for the electrode pin which is connected neither to the wall of the lamp envelope nor to, the electrode pin. The supporting member is fixed against axial displacement. The supporting member is fixed quartz glass, ceramic, high-melting-point metal. Due to this construction the manufacture of lamps is considerably simplified and critical steps are avoided.
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
- Granted April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- 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.