GB429660A - Improvements in or relating to electric incandescent lamps having at least one screened filament - Google Patents

Improvements in or relating to electric incandescent lamps having at least one screened filament

Info

Publication number
GB429660A
GB429660A GB20826/34A GB2082634A GB429660A GB 429660 A GB429660 A GB 429660A GB 20826/34 A GB20826/34 A GB 20826/34A GB 2082634 A GB2082634 A GB 2082634A GB 429660 A GB429660 A GB 429660A
Authority
GB
United Kingdom
Prior art keywords
bulb
corrugations
filament
electric incandescent
lampe
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
GB20826/34A
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 GB429660A publication Critical patent/GB429660A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/30—Envelopes; Vessels incorporating lenses

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB20826/34A 1933-07-18 1934-07-16 Improvements in or relating to electric incandescent lamps having at least one screened filament Expired GB429660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR772035T 1933-07-18

Publications (1)

Publication Number Publication Date
GB429660A true GB429660A (en) 1935-06-04

Family

ID=9192876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20826/34A Expired GB429660A (en) 1933-07-18 1934-07-16 Improvements in or relating to electric incandescent lamps having at least one screened filament

Country Status (4)

Country Link
BE (1) BE404130A (enrdf_load_stackoverflow)
FR (1) FR772035A (enrdf_load_stackoverflow)
GB (1) GB429660A (enrdf_load_stackoverflow)
NL (1) NL40236C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR772035A (fr) 1934-10-22
BE404130A (enrdf_load_stackoverflow)
NL40236C (enrdf_load_stackoverflow)

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