GB509801A - Improvements in high-pressure metal-vapour electric discharge lamps - Google Patents

Improvements in high-pressure metal-vapour electric discharge lamps

Info

Publication number
GB509801A
GB509801A GB7638/38A GB763838A GB509801A GB 509801 A GB509801 A GB 509801A GB 7638/38 A GB7638/38 A GB 7638/38A GB 763838 A GB763838 A GB 763838A GB 509801 A GB509801 A GB 509801A
Authority
GB
United Kingdom
Prior art keywords
electric discharge
discharge lamps
pressure metal
vapour electric
vapour
Prior art date
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
GB7638/38A
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 PLC filed Critical General Electric Co PLC
Priority to GB7638/38A priority Critical patent/GB509801A/en
Priority to US261390A priority patent/US2240353A/en
Publication of GB509801A publication Critical patent/GB509801A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps
GB7638/38A 1938-03-11 1938-03-11 Improvements in high-pressure metal-vapour electric discharge lamps Expired GB509801A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7638/38A GB509801A (en) 1938-03-11 1938-03-11 Improvements in high-pressure metal-vapour electric discharge lamps
US261390A US2240353A (en) 1938-03-11 1939-03-11 High-pressure metal-vapor electric discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7638/38A GB509801A (en) 1938-03-11 1938-03-11 Improvements in high-pressure metal-vapour electric discharge lamps

Publications (1)

Publication Number Publication Date
GB509801A true GB509801A (en) 1939-07-21

Family

ID=9836943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7638/38A Expired GB509801A (en) 1938-03-11 1938-03-11 Improvements in high-pressure metal-vapour electric discharge lamps

Country Status (2)

Country Link
US (1) US2240353A (en)
GB (1) GB509801A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957995A (en) * 1956-12-31 1960-10-25 Gen Electric Instant start discharge lamp
US3283202A (en) * 1963-04-04 1966-11-01 Bell Telephone Labor Inc Gas discharge spectral lamp of 5350 angstroms
US3293493A (en) * 1963-09-25 1966-12-20 Gen Electric Light source for color synthesis
NL7005294A (en) * 1970-04-13 1971-10-15
US3898504A (en) * 1970-12-09 1975-08-05 Matsushita Electronics Corp High pressure metal vapor discharge lamp

Also Published As

Publication number Publication date
US2240353A (en) 1941-04-29

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