Arc discharge lamp including starting circuit
CA 1112713 A · Owner: General Electric Company · Inventors: Bacharowski, Walter, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A jacketed high pressure metal vapor discharge lamp comprising an arc tube having main electrodes at opposite ends and a starter electrode, has a resistor and a diode in series bridged across the main electrodes which are connected across a peaked lead ballast in operation. A second resistor connects the starting electrode to the remote main electrode. The circuit lowers the minimum open circuit voltage required from the ballast for reliable starting.
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 November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 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.