CH208439A - Electric light bulb with a 4 atm. excess operating pressure. - Google Patents

Electric light bulb with a 4 atm. excess operating pressure.

Info

Publication number
CH208439A
CH208439A CH208439DA CH208439A CH 208439 A CH208439 A CH 208439A CH 208439D A CH208439D A CH 208439DA CH 208439 A CH208439 A CH 208439A
Authority
CH
Switzerland
Prior art keywords
atm
operating pressure
light bulb
electric light
excess operating
Prior art date
Application number
Other languages
German (de)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips Nv
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 Nv filed Critical Philips Nv
Publication of CH208439A publication Critical patent/CH208439A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
CH208439D 1938-03-15 1939-03-14 Electric light bulb with a 4 atm. excess operating pressure. CH208439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE208439X 1938-03-15

Publications (1)

Publication Number Publication Date
CH208439A true CH208439A (en) 1940-01-31

Family

ID=5794242

Family Applications (1)

Application Number Title Priority Date Filing Date
CH208439D CH208439A (en) 1938-03-15 1939-03-14 Electric light bulb with a 4 atm. excess operating pressure.

Country Status (3)

Country Link
BE (1) BE433234A (en)
CH (1) CH208439A (en)
FR (1) FR851517A (en)

Also Published As

Publication number Publication date
FR851517A (en) 1940-01-10
BE433234A (en)

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