NL39929C - - Google Patents

Info

Publication number: NL39929C
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.)

1934-04-10

Publication of NL39929C publication Critical patent/NL39929C/xx

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 (sv)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
NL39929C true NL39929C (sv)

Family

ID=6505904

Family Applications (1)

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

Country Status (4)

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

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

0
- NL NL39929D patent/NL39929C/xx active
1935
- 1935-03-12 US US10723A patent/US2049338A/en not_active Expired - Lifetime
- 1935-03-12 FR FR787061D patent/FR787061A/fr not_active Expired
- 1935-04-04 GB GB10493/35A patent/GB434404A/en not_active Expired

Also Published As

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

Publication	Publication Date	Title
FR786902A (sv)	1935-09-12
NL40734C (sv)	1937-05-15
BE402683A (sv)
BE384004A (sv)
BE399909A (sv)
BE400763A (sv)	1934-02-28
BE400945A (sv)
BE400974A (sv)
BE401025A (sv)	1934-02-28
BE401210A (sv)
BE401211A (sv)
NL43475C (sv)	1938-06-15
BE401226A (sv)
BE401237A (sv)
BE401496A (sv)
BE401688A (sv)
BE401725A (sv)
BE401891A (sv)
BE401946A (sv)	1934-04-30
BE401979A (sv)
BE402205A (sv)
BE402207A (sv)
BE402225A (sv)
BE402339A (sv)	1934-04-30
BE402346A (sv)