Universal burning alkali metal vapor lamp
CA 1094141 A · Owner: General Electric Company · Inventors: Bubar, Stanley F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a high pressure alkali metal vapor lamp arc tube having a sealed off metal exhaust tube projecting through an end closure, the tip of the exhaust tube is the cold spot where excess alkali metal condenses. A fine mesh screen friction-retained in the exhaust tube prevents passage of liquid droplets; any alkali metal impinging an the screen is slowly revaporized and condenses at the tip due to the higher temperature at the screen.
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 January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- 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.