Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB30719/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co PLCfiledCriticalGeneral Electric Co PLC
Publication of GB489591ApublicationCriticalpatent/GB489591A/en
H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
Landscapes
Resistance Heating
(AREA)
Abstract
489,591. Two - - part couplings. GENERAL ELECTRIC CO., Ltd. Nov. 9, 1937, Nos. 30719 and 30720. Convention dates, April 26 and April 30. [Class 38 (i)] [Also in Group XL] An adapter 16 for a lamp of the type comprising a high-pressure metal vapour lamp and an incandescent filament in the same bulb contains a resistance 5 and a resistance-element 6 of the type the resistance of which falls on heating, in parallel with each other and in series with the lamp when the latter is in. Reference has been directed by the Comptroller to Specification 477,747.
GB30719/37A1937-04-261937-11-09Improvements in combinations of electric discharge lamps and electric incandescent lamps
ExpiredGB489591A
(en)