BE569498A - - Google Patents

Info

Publication number
BE569498A
BE569498A BE569498DA BE569498A BE 569498 A BE569498 A BE 569498A BE 569498D A BE569498D A BE 569498DA BE 569498 A BE569498 A BE 569498A
Authority
BE
Belgium
Application number
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.)
Publication of BE569498A publication Critical patent/BE569498A/xx

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
    • H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/025—Associated optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/325—U-shaped lamps
BE569498D 1957-07-18 BE569498A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL219119 1957-07-18

Publications (1)

Publication Number Publication Date
BE569498A true BE569498A (zh)

Family

ID=19750932

Family Applications (1)

Application Number Title Priority Date Filing Date
BE569498D BE569498A (zh) 1957-07-18

Country Status (4)

Country Link
BE (1) BE569498A (zh)
CH (1) CH366597A (zh)
DE (1) DE1793020U (zh)
GB (1) GB883618A (zh)

Also Published As

Publication number Publication date
GB883618A (en) 1961-12-06
CH366597A (de) 1963-01-15
DE1793020U (de) 1959-08-06

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