FR618580A - Dispositif de filament pour lampes de t. s. f., valves ou autres applications - Google Patents

Dispositif de filament pour lampes de t. s. f., valves ou autres applications

Info

Publication number
FR618580A
FR618580A FR618580DA FR618580A FR 618580 A FR618580 A FR 618580A FR 618580D A FR618580D A FR 618580DA FR 618580 A FR618580 A FR 618580A
Authority
FR
France
Prior art keywords
lamps
valves
applications
filament device
filament
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
English (en)
Inventor
Jacques-Antoine-Mari Hawadier
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.)
FR DES LAMPES A INCANDESCENCE
Original Assignee
FR DES LAMPES A INCANDESCENCE
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 FR DES LAMPES A INCANDESCENCE filed Critical FR DES LAMPES A INCANDESCENCE
Application granted granted Critical
Publication of FR618580A publication Critical patent/FR618580A/fr
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
FR618580D 1925-11-14 1925-11-14 Dispositif de filament pour lampes de t. s. f., valves ou autres applications Expired FR618580A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR618580T 1925-11-14

Publications (1)

Publication Number Publication Date
FR618580A true FR618580A (fr) 1927-03-11

Family

ID=8983073

Family Applications (1)

Application Number Title Priority Date Filing Date
FR618580D Expired FR618580A (fr) 1925-11-14 1925-11-14 Dispositif de filament pour lampes de t. s. f., valves ou autres applications

Country Status (1)

Country Link
FR (1) FR618580A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525565A (en) * 1948-07-12 1950-10-10 Eitel Mccullough Inc Filamentary cathode for electron tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525565A (en) * 1948-07-12 1950-10-10 Eitel Mccullough Inc Filamentary cathode for electron tubes

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