NL39929C - - Google Patents

Info

Publication number
NL39929C
NL39929C NL39929DA NL39929C NL 39929 C NL39929 C NL 39929C NL 39929D A NL39929D A NL 39929DA NL 39929 C NL39929 C NL 39929C
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 NL39929C publication Critical patent/NL39929C/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
    • H01K9/06—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in device, e.g. switch, for automatically completing circuit of reserve body
NL39929D 1934-04-10 NL39929C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE434404X 1934-04-10

Publications (1)

Publication Number Publication Date
NL39929C true NL39929C (en)

Family

ID=6505904

Family Applications (1)

Application Number Title Priority Date Filing Date
NL39929D NL39929C (en) 1934-04-10

Country Status (4)

Country Link
US (1) US2049338A (en)
FR (1) FR787061A (en)
GB (1) GB434404A (en)
NL (1) NL39929C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448493A (en) * 1946-08-30 1948-08-31 Meno Stanley Joseph Multiple life light bulb
US2518909A (en) * 1947-12-13 1950-08-15 Abraham Krakauer Signal responsive to currentpassage time
US2607900A (en) * 1949-11-03 1952-08-19 Tung Sol Lamp Works Inc Cathode-ray tube
US4580079A (en) * 1980-08-11 1986-04-01 Ronald Koo Multifilament bulb with filament switching device
US4447760A (en) * 1980-08-11 1984-05-08 Ronald Koo Filament switching device
US4382209A (en) * 1980-10-06 1983-05-03 General Electric Company Thermal switch and dual filament long life lamp

Also Published As

Publication number Publication date
US2049338A (en) 1936-07-28
GB434404A (en) 1935-08-30
FR787061A (en) 1935-09-16

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