FR662768A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number
FR662768A
FR662768A FR662768DA FR662768A FR 662768 A FR662768 A FR 662768A FR 662768D A FR662768D A FR 662768DA FR 662768 A FR662768 A FR 662768A
Authority
FR
France
Prior art keywords
electric discharge
discharge tube
tube
electric
discharge
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
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR662768A publication Critical patent/FR662768A/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
FR662768D 1927-10-29 1928-10-22 Electric discharge tube Expired FR662768A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR662768A true FR662768A (en) 1929-08-12

Family

ID=19783188

Family Applications (1)

Application Number Title Priority Date Filing Date
FR662768D Expired FR662768A (en) 1927-10-29 1928-10-22 Electric discharge tube

Country Status (3)

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

Also Published As

Publication number Publication date
GB299704A (en) 1930-01-16
BE355094A (en)

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