GB720130A - Improvements in or relating to electric incandescent lamps - Google Patents

Improvements in or relating to electric incandescent lamps

Info

Publication number
GB720130A
GB720130A GB24827/52A GB2482752A GB720130A GB 720130 A GB720130 A GB 720130A GB 24827/52 A GB24827/52 A GB 24827/52A GB 2482752 A GB2482752 A GB 2482752A GB 720130 A GB720130 A GB 720130A
Authority
GB
United Kingdom
Prior art keywords
filaments
filament
lamp
electric incandescent
wire
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
GB24827/52A
Other languages
English (en)
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB720130A publication Critical patent/GB720130A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB24827/52A 1951-10-06 1952-10-03 Improvements in or relating to electric incandescent lamps Expired GB720130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP6288D DE887843C (de) 1951-10-06 1951-10-06 Elektrische Gluehlampe mit zwei Gluehdraehten, insbesondere fuer Kraftwagenscheinwerfer

Publications (1)

Publication Number Publication Date
GB720130A true GB720130A (en) 1954-12-15

Family

ID=40622216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24827/52A Expired GB720130A (en) 1951-10-06 1952-10-03 Improvements in or relating to electric incandescent lamps

Country Status (7)

Country Link
US (1) US2733377A (enrdf_load_stackoverflow)
BE (1) BE514629A (enrdf_load_stackoverflow)
CH (1) CH304864A (enrdf_load_stackoverflow)
DE (1) DE887843C (enrdf_load_stackoverflow)
FR (1) FR1073958A (enrdf_load_stackoverflow)
GB (1) GB720130A (enrdf_load_stackoverflow)
NL (2) NL89412C (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156843A (en) * 1960-10-27 1964-11-10 Sylvania Electric Prod Incandescent lamp mount
US3548244A (en) * 1968-07-01 1970-12-15 British Lighting Ind Ltd Lamp having twin filaments and integral filament legs mounted in a bridge
DE10219729A1 (de) * 2002-05-02 2003-11-13 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glühlampe für Kraftfahrzeugscheinwerfer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084750A (en) * 1935-01-29 1937-06-22 Edison Inc Thomas A Gaseous discharge system
LU28218A1 (enrdf_load_stackoverflow) * 1946-11-27
NL72673C (enrdf_load_stackoverflow) * 1949-04-13

Also Published As

Publication number Publication date
NL172909B (nl)
CH304864A (de) 1955-01-31
FR1073958A (fr) 1954-09-30
US2733377A (en) 1956-01-31
BE514629A (enrdf_load_stackoverflow)
DE887843C (de) 1953-08-27
NL89412C (enrdf_load_stackoverflow) 1958-06-16

Similar Documents

Publication Publication Date Title
GB720130A (en) Improvements in or relating to electric incandescent lamps
GB806967A (en) Fuse for electric incandescent lamp
GB502330A (en) Improvements in and relating to electric incandescent lamps
GB817326A (en) Improvements in or relating to incandescent electric lamps
US1953456A (en) Incandescent electric lamp
GB894812A (en) Projection lamp
GB638805A (en) Improvements in and relating to electric incandescent lamps
GB678037A (en) Improved mount structure for electric incandescent lamps
GB967196A (en) Improvements in or relating to electric incandescent lamps
GB884069A (en) Electric lamp mount
GB739337A (en) Improvements in or relating to electric incandescent lamps of the kind comprising atleast one main filament and one screened dimming filament
GB765083A (en) Improvements in or relating to electric incandescent lamps provided with planar filaments
GB948859A (en) Improvements in and relating to incandescent lamps
GB1137439A (en) Projection lamp
GB153153A (en) Improvements in electric lamps
GB888491A (en) Improvements in or relating to motor-vehicle electric lamps
GB754011A (en) Improvements in or relating to double-capped tubular electric incondescent lamps
GB646386A (en) Electric gaseous discharge device
GB728263A (en) Improvements in and relating to electric incandescent lamps
US1116595A (en) Incandescent lamp.
GB253535A (en) Improvements in and relating to electric incandescent lamps
GB793256A (en) Improvements in and relating to incandescent electric lamps
GB694672A (en) Improvements in or relating to electric incandescent lamps
GB832368A (en) Improvements in or relating to electric incandescent lamps for motor car lamps such as headlamps
GB253536A (en) Improvements in and relating to electric incandescent lamps