GB484355A - Improvements in or relating to electric incandescent lamps - Google Patents

Improvements in or relating to electric incandescent lamps

Info

Publication number
GB484355A
GB484355A GB10544/37A GB1054437A GB484355A GB 484355 A GB484355 A GB 484355A GB 10544/37 A GB10544/37 A GB 10544/37A GB 1054437 A GB1054437 A GB 1054437A GB 484355 A GB484355 A GB 484355A
Authority
GB
United Kingdom
Prior art keywords
krypton
per cent
incandescent lamps
nitrogen
electric incandescent
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
GB10544/37A
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 GB484355A publication Critical patent/GB484355A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K1/00Details
    • H01K1/50Selection of substances for gas fillings; Specified pressure thereof

Landscapes

  • Discharge Lamp (AREA)
GB10544/37A 1936-04-15 1937-04-13 Improvements in or relating to electric incandescent lamps Expired GB484355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE484355X 1936-04-15

Publications (1)

Publication Number Publication Date
GB484355A true GB484355A (en) 1938-05-04

Family

ID=6543102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10544/37A Expired GB484355A (en) 1936-04-15 1937-04-13 Improvements in or relating to electric incandescent lamps

Country Status (4)

Country Link
US (1) US2100886A (en:Method)
BE (1) BE421039A (en:Method)
FR (1) FR820587A (en:Method)
GB (1) GB484355A (en:Method)

Also Published As

Publication number Publication date
US2100886A (en) 1937-11-30
BE421039A (en:Method)
FR820587A (fr) 1937-11-15

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