GB429424A - Improvements in or relating to electric incandescent lamps - Google Patents

Improvements in or relating to electric incandescent lamps

Info

Publication number
GB429424A
GB429424A GB29450/33A GB2945033A GB429424A GB 429424 A GB429424 A GB 429424A GB 29450/33 A GB29450/33 A GB 29450/33A GB 2945033 A GB2945033 A GB 2945033A GB 429424 A GB429424 A GB 429424A
Authority
GB
United Kingdom
Prior art keywords
bulb
corrugations
internal
lampe
nov
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
GB29450/33A
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.)
Lampe Yvel Auto Lampe & Cie An
Original Assignee
Lampe Yvel Auto Lampe & Cie An
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 Lampe Yvel Auto Lampe & Cie An filed Critical Lampe Yvel Auto Lampe & Cie An
Publication of GB429424A publication Critical patent/GB429424A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/30—Envelopes; Vessels incorporating lenses

Landscapes

  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB29450/33A 1933-07-20 1933-10-24 Improvements in or relating to electric incandescent lamps Expired GB429424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR44156T 1933-07-20

Publications (1)

Publication Number Publication Date
GB429424A true GB429424A (en) 1935-05-24

Family

ID=8680011

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29450/33A Expired GB429424A (en) 1933-07-20 1933-10-24 Improvements in or relating to electric incandescent lamps
GB19932/34A Expired GB424467A (en) 1933-07-20 1934-07-06 Improvements in or relating to electric incandescent lamps having at least one filament which is partly surrounded by a screen

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB19932/34A Expired GB424467A (en) 1933-07-20 1934-07-06 Improvements in or relating to electric incandescent lamps having at least one filament which is partly surrounded by a screen

Country Status (3)

Country Link
BE (1) BE404010A (enrdf_load_stackoverflow)
FR (5) FR703874A (enrdf_load_stackoverflow)
GB (2) GB429424A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR44156E (fr) 1934-11-20
BE404010A (enrdf_load_stackoverflow)
FR43077E (fr) 1934-02-08
FR42817E (fr) 1933-11-04
FR703874A (fr) 1931-05-07
GB424467A (en) 1935-02-21
FR43195E (fr) 1934-03-09

Similar Documents

Publication Publication Date Title
GB397719A (en) Improvements in electric lamps
GB367135A (en) Incandescent electric lamp for motor car headlights
GB487011A (en) Improvements in or relating to reflecting electric incandescent lamps
GB429424A (en) Improvements in or relating to electric incandescent lamps
GB404222A (en) Improvements in electric incandescent lamps
GB532090A (en) Improvements in or relating to the head lamps of motor vehicles
US2045512A (en) Electric incandescent lamp
GB543663A (en) Improvements in adjustable reflectors for electric lamps
GB314545A (en) Improvements in or relating to vehicle and like lamps
US1781436A (en) Compound reflector
GB423049A (en) Improvements in or relating to electric incandescent lamps with internal reflectors
GB429660A (en) Improvements in or relating to electric incandescent lamps having at least one screened filament
GB514878A (en) Improvements in or relating to the electrical illumination of vehicles
GB292167A (enrdf_load_stackoverflow)
GB199033A (en) Improvements in or relating to incandescent lamps for motor vehicles and the like
GB452009A (en) Improvements in or relating to electric light illuminations
GB287446A (en) Electric lamp specially applicable for automobile head-lights
GB447074A (en) Improvements in or relating to electric incandescent lamps
GB449575A (en) Improvements in or relating to illuminating projectors, more particularly those intended for motor cars
GB493353A (en) Improvements relating to projector lamps
GB260976A (en) Improvement in projecting lamps
GB144734A (en) Improvements in light projectors including head lamps for vehicles and the like
GB302917A (en) Improvements in incandescent electric lamps
GB220922A (en) Improvements relating to igniting devices
GB149978A (en) Improvements in and relating to head-lights and electric bulbs therefor