GB510590A - Improvements relating to electric lamps - Google Patents

Improvements relating to electric lamps

Info

Publication number
GB510590A
GB510590A GB11727/39A GB1172739A GB510590A GB 510590 A GB510590 A GB 510590A GB 11727/39 A GB11727/39 A GB 11727/39A GB 1172739 A GB1172739 A GB 1172739A GB 510590 A GB510590 A GB 510590A
Authority
GB
United Kingdom
Prior art keywords
improvements relating
electric lamps
lamps
electric
relating
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
GB11727/39A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB510590A publication Critical patent/GB510590A/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
    • H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
GB11727/39A 1937-02-02 1938-02-02 Improvements relating to electric lamps Expired GB510590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH510539X 1937-02-02

Publications (1)

Publication Number Publication Date
GB510590A true GB510590A (en) 1939-08-02

Family

ID=4517412

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11727/39A Expired GB510590A (en) 1937-02-02 1938-02-02 Improvements relating to electric lamps
GB3277/38A Expired GB510539A (en) 1937-02-02 1938-02-02 Improvements in electric lamps

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3277/38A Expired GB510539A (en) 1937-02-02 1938-02-02 Improvements in electric lamps

Country Status (5)

Country Link
US (1) US2329455A (forum.php)
BE (1) BE425995A (forum.php)
DE (1) DE910934C (forum.php)
FR (1) FR832724A (forum.php)
GB (2) GB510590A (forum.php)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619615A (en) * 1939-05-11 1952-11-25 Gen Electric Circuit for operating electric discharge lamps
US4170744A (en) * 1978-03-10 1979-10-09 General Electric Company Combination discharge-incandescent lamp with thermal switch control
CH642775A5 (de) * 1982-05-13 1984-04-30 Johann Buser Entladungsgefaess mit hochstromdurchfuehrungen.
AU2002214567A1 (en) * 2000-10-04 2002-04-15 Theodore Mcbain Independent dual-function light bulb

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190314163A (en) * 1903-06-25 1904-04-07 Frederick William Le Tall Improvements in Apparatus for Electric Lighting.
US985486A (en) * 1907-07-16 1911-02-28 Alfred A Wohlauer Electric-lighting apparatus.
DE330821C (de) * 1919-09-27 1920-12-23 Paul Bachmann Aus Quecksilberdampf-, Metall- und Kohlenfadenlampen zusammengesetzter Beleuchtungs- und Bestrahlungsapparat
FR743742A (forum.php) * 1931-10-03 1933-04-05
AT135460B (de) * 1931-10-03 1933-11-25 Philips Nv Elektrische Entladungsröhre mit Metalldampffüllung.
US1976149A (en) * 1932-01-25 1934-10-09 Sperti Lamp Corp Lamp
US2065988A (en) * 1932-01-25 1936-12-29 Sperti Lamp Corp Lamp
FR751345A (fr) * 1932-03-01 1933-08-31 Lampes Sa Perfectionnements aux lampes
US1990170A (en) * 1932-12-07 1935-02-05 Gen Electric Gaseous electric discharge lamp device
US2020737A (en) * 1932-12-24 1935-11-12 Gen Electric Gaseous electric discharge arc lamp

Also Published As

Publication number Publication date
US2329455A (en) 1943-09-14
DE910934C (de) 1954-05-06
GB510539A (en) 1939-08-02
BE425995A (forum.php)
FR832724A (fr) 1938-10-03

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