FR886987A - Spiral tungsten filament for electric lamps, in particular for electronic lamps - Google Patents

Spiral tungsten filament for electric lamps, in particular for electronic lamps

Info

Publication number
FR886987A
FR886987A FR886987DA FR886987A FR 886987 A FR886987 A FR 886987A FR 886987D A FR886987D A FR 886987DA FR 886987 A FR886987 A FR 886987A
Authority
FR
France
Prior art keywords
lamps
tungsten filament
electronic
electric
spiral tungsten
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
Other languages
French (fr)
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz 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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of FR886987A publication Critical patent/FR886987A/en
Expired legal-status Critical Current

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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR886987D 1941-11-05 1942-10-19 Spiral tungsten filament for electric lamps, in particular for electronic lamps Expired FR886987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE886987X 1941-11-05

Publications (1)

Publication Number Publication Date
FR886987A true FR886987A (en) 1943-10-29

Family

ID=6833576

Family Applications (1)

Application Number Title Priority Date Filing Date
FR886987D Expired FR886987A (en) 1941-11-05 1942-10-19 Spiral tungsten filament for electric lamps, in particular for electronic lamps

Country Status (2)

Country Link
BE (1) BE447584A (en)
FR (1) FR886987A (en)

Also Published As

Publication number Publication date
BE447584A (en)

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