BE440909A - - Google Patents

Info

Publication number
BE440909A
BE440909A BE440909DA BE440909A BE 440909 A BE440909 A BE 440909A BE 440909D A BE440909D A BE 440909DA BE 440909 A BE440909 A BE 440909A
Authority
BE
Belgium
Prior art keywords
crystals
emi
illuminating
sag
tungsten
Prior art date
Application number
Other languages
English (en)
French (fr)
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.)
Publication of BE440909A publication Critical patent/BE440909A/fr

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
BE440909D 1937-02-20 BE440909A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR818158T 1937-02-20

Publications (1)

Publication Number Publication Date
BE440909A true BE440909A (zh)

Family

ID=9268724

Family Applications (2)

Application Number Title Priority Date Filing Date
BE440903D BE440903A (zh) 1937-02-20
BE440909D BE440909A (zh) 1937-02-20

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BE440903D BE440903A (zh) 1937-02-20

Country Status (2)

Country Link
BE (2) BE440909A (zh)
FR (1) FR818158A (zh)

Also Published As

Publication number Publication date
FR818158A (fr) 1937-09-20
BE440903A (zh)

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