DE717963C - Elektrische Gluehlampe fuer Luftschutzzwecke - Google Patents

Elektrische Gluehlampe fuer Luftschutzzwecke

Info

Publication number
DE717963C
DE717963C DEV34560D DEV0034560D DE717963C DE 717963 C DE717963 C DE 717963C DE V34560 D DEV34560 D DE V34560D DE V0034560 D DEV0034560 D DE V0034560D DE 717963 C DE717963 C DE 717963C
Authority
DE
Germany
Prior art keywords
filament
light output
light
bulb
attached
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
DEV34560D
Other languages
German (de)
English (en)
Inventor
Georg Brody
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.)
Ver Gluehlampen & Elek AG
Original Assignee
Ver Gluehlampen & Elek AG
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 Ver Gluehlampen & Elek AG filed Critical Ver Gluehlampen & Elek AG
Application granted granted Critical
Publication of DE717963C publication Critical patent/DE717963C/de
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
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
    • H01K9/04—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 manually operated switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Radiation-Therapy Devices (AREA)
DEV34560D 1937-02-19 1938-02-08 Elektrische Gluehlampe fuer Luftschutzzwecke Expired DE717963C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU490736X 1937-02-19

Publications (1)

Publication Number Publication Date
DE717963C true DE717963C (de) 1942-02-26

Family

ID=10979345

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV34560D Expired DE717963C (de) 1937-02-19 1938-02-08 Elektrische Gluehlampe fuer Luftschutzzwecke

Country Status (4)

Country Link
DE (1) DE717963C (en(2012))
FR (1) FR833684A (en(2012))
GB (1) GB490736A (en(2012))
NL (1) NL50134C (en(2012))

Also Published As

Publication number Publication date
FR833684A (fr) 1938-10-27
NL50134C (en(2012))
GB490736A (en) 1938-08-19

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