GB299704A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB299704A
GB299704A GB30571/28A GB3057128A GB299704A GB 299704 A GB299704 A GB 299704A GB 30571/28 A GB30571/28 A GB 30571/28A GB 3057128 A GB3057128 A GB 3057128A GB 299704 A GB299704 A GB 299704A
Authority
GB
United Kingdom
Prior art keywords
pressure
cathode
argon
bulb
mercury
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
GB30571/28A
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 GB299704A publication Critical patent/GB299704A/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
    • H01J61/70—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
GB30571/28A 1927-10-29 1928-10-22 Improvements in or relating to electric discharge tubes Expired GB299704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL299704X 1927-10-29

Publications (1)

Publication Number Publication Date
GB299704A true GB299704A (en) 1930-01-16

Family

ID=19783188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30571/28A Expired GB299704A (en) 1927-10-29 1928-10-22 Improvements in or relating to electric discharge tubes

Country Status (3)

Country Link
BE (1) BE355094A (xx)
FR (1) FR662768A (xx)
GB (1) GB299704A (xx)

Also Published As

Publication number Publication date
FR662768A (fr) 1929-08-12
BE355094A (xx)

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