FR936338A - Method of manufacturing the cathode of a discharge tube - Google Patents

Method of manufacturing the cathode of a discharge tube

Info

Publication number
FR936338A
FR936338A FR936338DA FR936338A FR 936338 A FR936338 A FR 936338A FR 936338D A FR936338D A FR 936338DA FR 936338 A FR936338 A FR 936338A
Authority
FR
France
Prior art keywords
cathode
manufacturing
discharge tube
discharge
tube
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 FR936338A publication Critical patent/FR936338A/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)
  • Solid Thermionic Cathode (AREA)
FR936338D 1944-11-04 1946-11-27 Method of manufacturing the cathode of a discharge tube Expired FR936338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE258432X 1944-11-04

Publications (1)

Publication Number Publication Date
FR936338A true FR936338A (en) 1948-07-16

Family

ID=3866699

Family Applications (1)

Application Number Title Priority Date Filing Date
FR936338D Expired FR936338A (en) 1944-11-04 1946-11-27 Method of manufacturing the cathode of a discharge tube

Country Status (5)

Country Link
BE (1) BE457759A (en)
CH (1) CH258432A (en)
DE (1) DE819296C (en)
FR (1) FR936338A (en)
GB (1) GB637385A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052578B (en) * 1953-06-18 1959-03-12 Siemens Ag Process for the production of an oxide cathode with a porous metal layer sintered onto the surface of the cathode body

Also Published As

Publication number Publication date
DE819296C (en) 1951-10-31
CH258432A (en) 1948-11-30
GB637385A (en) 1950-05-17
BE457759A (en)

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