NL38459C - - Google Patents

Info

Publication number
NL38459C
NL38459C NL38459DA NL38459C NL 38459 C NL38459 C NL 38459C NL 38459D A NL38459D A NL 38459DA NL 38459 C NL38459 C NL 38459C
Authority
NL
Netherlands
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 NL38459C publication Critical patent/NL38459C/xx

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/70Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/74Lamps 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
NL38459D 1931-12-24 NL38459C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL400388X 1931-12-24

Publications (1)

Publication Number Publication Date
NL38459C true NL38459C (en:Method)

Family

ID=19785886

Family Applications (1)

Application Number Title Priority Date Filing Date
NL38459D NL38459C (en:Method) 1931-12-24

Country Status (5)

Country Link
US (1) US1919933A (en:Method)
DE (1) DE604600C (en:Method)
FR (1) FR743225A (en:Method)
GB (1) GB400388A (en:Method)
NL (1) NL38459C (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2687471A (en) * 1948-05-01 1954-08-24 Western Union Telegraph Co Concentrated arc discharge device
DE1022322B (de) * 1953-07-31 1958-01-09 Gen Electric Co Ltd Elektrische Natriumdampfentladungslampe

Also Published As

Publication number Publication date
FR743225A (en:Method) 1933-03-25
GB400388A (en) 1933-10-26
DE604600C (de) 1934-10-24
US1919933A (en) 1933-07-25

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