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
GB16938/48A
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.)
Auralight AB
Original Assignee
Lumalampan AB
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 Lumalampan ABfiledCriticalLumalampan AB
Publication of GB653930ApublicationCriticalpatent/GB653930A/en
H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
Landscapes
Vessels And Coating Films For Discharge Lamps
(AREA)
Abstract
653,930. Discharge lamps. INGHAM, H. W. DINTON- (Lumalampan Aktiebolaget). June 23, 1948, No. 16938. [Class 39 (i)] A gas-filled discharge lamp containing two spaced electrodes 2, 7 has part of the glass envelope 13 flattened and covered internally with fluorescent material 4, the remainder of the internal surface of the glass envelope being mirror-plated 12. An ignition condenser 11 may be assembled in the lamp socket 10.
GB16938/48A1947-05-091948-06-23Improvements in and relating to electric discharge lamp for photographic purposes
ExpiredGB653930A
(en)