FR665482A - Special filament for electronic emissions - Google Patents

Special filament for electronic emissions

Info

Publication number
FR665482A
FR665482A FR665482DA FR665482A FR 665482 A FR665482 A FR 665482A FR 665482D A FR665482D A FR 665482DA FR 665482 A FR665482 A FR 665482A
Authority
FR
France
Prior art keywords
electronic emissions
special filament
filament
special
emissions
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)
Inventor
Georges Dejardin
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.)
IND DE E C GRAMMONT ET DE ALEX
Original Assignee
IND DE E C GRAMMONT ET DE ALEX
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 IND DE E C GRAMMONT ET DE ALEX filed Critical IND DE E C GRAMMONT ET DE ALEX
Application granted granted Critical
Publication of FR665482A publication Critical patent/FR665482A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Crystals, And After-Treatments Of Crystals (AREA)
FR665482D 1928-12-10 1928-12-10 Special filament for electronic emissions Expired FR665482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR665482T 1928-12-10

Publications (1)

Publication Number Publication Date
FR665482A true FR665482A (en) 1929-09-19

Family

ID=9013346

Family Applications (1)

Application Number Title Priority Date Filing Date
FR665482D Expired FR665482A (en) 1928-12-10 1928-12-10 Special filament for electronic emissions

Country Status (3)

Country Link
BE (1) BE364762A (en)
FR (1) FR665482A (en)
GB (1) GB337971A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657325A (en) * 1950-12-23 1953-10-27 Sylvania Electric Prod Electrode for electric discharge lamps

Also Published As

Publication number Publication date
BE364762A (en)
GB337971A (en) 1930-11-13

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