GB520835A - Improvements in gasfilled electric incandescent lamps - Google Patents

Improvements in gasfilled electric incandescent lamps

Info

Publication number
GB520835A
GB520835A GB31517/38A GB3151738A GB520835A GB 520835 A GB520835 A GB 520835A GB 31517/38 A GB31517/38 A GB 31517/38A GB 3151738 A GB3151738 A GB 3151738A GB 520835 A GB520835 A GB 520835A
Authority
GB
United Kingdom
Prior art keywords
lamp
incandescent lamps
nitrogen
electric incandescent
hydrogen
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
GB31517/38A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB520835A publication Critical patent/GB520835A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
    • H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Discharge Lamp (AREA)
GB31517/38A 1937-11-02 1938-10-31 Improvements in gasfilled electric incandescent lamps Expired GB520835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL208437X 1937-11-02

Publications (1)

Publication Number Publication Date
GB520835A true GB520835A (en) 1940-05-06

Family

ID=19778687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31517/38A Expired GB520835A (en) 1937-11-02 1938-10-31 Improvements in gasfilled electric incandescent lamps

Country Status (7)

Country Link
US (1) US2203897A (enrdf_load_stackoverflow)
BE (1) BE430899A (enrdf_load_stackoverflow)
CH (1) CH208437A (enrdf_load_stackoverflow)
DE (1) DE711881C (enrdf_load_stackoverflow)
FR (1) FR845482A (enrdf_load_stackoverflow)
GB (1) GB520835A (enrdf_load_stackoverflow)
NL (1) NL51546C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462837A (en) * 1945-10-08 1949-03-01 Tung Sol Lamp Works Inc Incandescent lamp
US2489261A (en) * 1948-04-15 1949-11-29 Tung Sol Lamp Works Inc Metallic filament incandescent electric lamp and the manufacture thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455394A (en) * 1943-06-29 1948-12-07 Sperry Corp Accelerometer
DE1015145B (de) * 1953-12-05 1957-09-05 Egyesuelt Izzolampa Gasgefuellte elektrische Gluehlampe, insbesondere mit einem Schirm versehene gasgefuellte Gluehlampe, z.B. Autolampe, und dafuer bestimmter Getter
US3519864A (en) * 1966-12-29 1970-07-07 Sylvania Electric Prod High pressure electric discharge device with barium peroxide getter and getter mounting structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462837A (en) * 1945-10-08 1949-03-01 Tung Sol Lamp Works Inc Incandescent lamp
US2489261A (en) * 1948-04-15 1949-11-29 Tung Sol Lamp Works Inc Metallic filament incandescent electric lamp and the manufacture thereof

Also Published As

Publication number Publication date
CH208437A (de) 1940-01-31
NL51546C (enrdf_load_stackoverflow)
US2203897A (en) 1940-06-11
DE711881C (de) 1941-10-08
FR845482A (fr) 1939-08-24
BE430899A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB1211179A (en) Improvements in or relating to electric lamps
GB1054423A (enrdf_load_stackoverflow)
GB520835A (en) Improvements in gasfilled electric incandescent lamps
GB1248157A (en) Metallic vapor arc-lamp
GB1026069A (en) Arc discharge lamp
GB352352A (enrdf_load_stackoverflow)
GB420575A (en) Improvements in electric gasfilled incandescent lamps
US2267092A (en) Sodium vapor lamp
GB879062A (en) A gas-filled incandescent electric lamp, more especially for projection purposes
US1687496A (en) Incandescent lamp
GB1050801A (enrdf_load_stackoverflow)
GB1195109A (en) Tungsten Incandescent Lamps.
GB518016A (en) Improvements in or relating to gasfilled electric incandescent lamps
GB268986A (en) Improvements in or relating to electric incandescent lamps
GB1283889A (en) Filament lamp
GB504893A (en) Improvements in or relating to electric incandescent lamps
GB196905A (en) Improvements in or relating to electric lamps provided with a coiled filament
GB1286746A (en) Getter composition for electric lamps and similar devices
GB1129865A (en) Improvements in or relating to low-pressure mercury vapour discharge lamps
GB1019814A (en) Improvements in or relating to gas-filled electric incandescent lamps
GB1102646A (en) Electric lamp with ribbon seal
GB521331A (en) Improvements in or relating to electric gasfilled incandescent lamps whose operatingpressure exceeds 4 atms
GB511889A (en) Improvements in gas-filled electric incandescent lamps
GB976944A (en) Improvements in or relating to electric incandescent lamps
GB1226779A (enrdf_load_stackoverflow)