CH221111A - Electric tubular incandescent lamp with smooth filament, in particular for optical purposes. - Google Patents

Electric tubular incandescent lamp with smooth filament, in particular for optical purposes.

Info

Publication number
CH221111A
CH221111A CH221111DA CH221111A CH 221111 A CH221111 A CH 221111A CH 221111D A CH221111D A CH 221111DA CH 221111 A CH221111 A CH 221111A
Authority
CH
Switzerland
Prior art keywords
incandescent lamp
optical purposes
electric tubular
tubular incandescent
smooth filament
Prior art date
Application number
Other languages
German (de)
Inventor
F Patent-Treuhand-Gesellschaft
Original Assignee
Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
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 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh filed Critical Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
Publication of CH221111A publication Critical patent/CH221111A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp
CH221111D 1940-11-15 1941-09-18 Electric tubular incandescent lamp with smooth filament, in particular for optical purposes. CH221111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE221111X 1940-11-15

Publications (1)

Publication Number Publication Date
CH221111A true CH221111A (en) 1942-05-15

Family

ID=5838275

Family Applications (1)

Application Number Title Priority Date Filing Date
CH221111D CH221111A (en) 1940-11-15 1941-09-18 Electric tubular incandescent lamp with smooth filament, in particular for optical purposes.

Country Status (4)

Country Link
BE (1) BE443146A (en)
CH (1) CH221111A (en)
FR (1) FR875469A (en)
NL (1) NL58238C (en)

Also Published As

Publication number Publication date
FR875469A (en) 1942-09-23
BE443146A (en)
NL58238C (en)

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