FR1073725A - Discharge tube and its manufacturing process - Google Patents

Discharge tube and its manufacturing process

Info

Publication number
FR1073725A
FR1073725A FR1073725DA FR1073725A FR 1073725 A FR1073725 A FR 1073725A FR 1073725D A FR1073725D A FR 1073725DA FR 1073725 A FR1073725 A FR 1073725A
Authority
FR
France
Prior art keywords
manufacturing process
discharge tube
discharge
tube
manufacturing
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1073725A publication Critical patent/FR1073725A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/142—Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
    • 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)
  • Discharge Lamp (AREA)
FR1073725D 1952-03-24 1953-03-23 Discharge tube and its manufacturing process Expired FR1073725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL314779X 1952-03-24

Publications (1)

Publication Number Publication Date
FR1073725A true FR1073725A (en) 1954-09-28

Family

ID=19783766

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1073725D Expired FR1073725A (en) 1952-03-24 1953-03-23 Discharge tube and its manufacturing process

Country Status (7)

Country Link
BE (1) BE518639A (en)
CH (1) CH314779A (en)
DE (1) DE974888C (en)
FR (1) FR1073725A (en)
GB (1) GB725450A (en)
IT (1) IT500462A (en)
NL (1) NL168358C (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL24414C (en) * 1926-06-09
CH128076A (en) * 1926-06-09 1928-10-01 Philips Nv Hot cathode for discharge vessels.
DE572700C (en) * 1926-06-09 1933-03-22 Friedrich Meyer Dr Incandescent cathode for discharge vessels
NL23762C (en) * 1928-04-13
DE597580C (en) * 1928-05-01 1934-05-26 Osram G M B H Komm Ges Electric light or ultraviolet radiation tubes
GB311294A (en) * 1928-05-08 1930-08-08 Hans Joachim Spanner Improvements in and relating to electric discharge devices
US2249672A (en) * 1936-12-10 1941-07-15 Gen Electric Discharge device
BE482916A (en) * 1947-06-05
GB650730A (en) * 1947-07-16 1951-02-28 British Thomson Houston Co Ltd Improvements in and relating to electron emitting materials

Also Published As

Publication number Publication date
IT500462A (en)
GB725450A (en) 1955-03-02
BE518639A (en)
NL168358C (en)
CH314779A (en) 1956-06-30
DE974888C (en) 1961-05-25

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