FR839900A - Oxide cathode - Google Patents

Oxide cathode

Info

Publication number
FR839900A
FR839900A FR839900DA FR839900A FR 839900 A FR839900 A FR 839900A FR 839900D A FR839900D A FR 839900DA FR 839900 A FR839900 A FR 839900A
Authority
FR
France
Prior art keywords
oxide cathode
cathode
oxide
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens 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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR839900A publication Critical patent/FR839900A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
FR839900D 1937-08-30 1938-06-27 Oxide cathode Expired FR839900A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE748240T 1937-08-30

Publications (1)

Publication Number Publication Date
FR839900A true FR839900A (en) 1939-04-13

Family

ID=6762069

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839900D Expired FR839900A (en) 1937-08-30 1938-06-27 Oxide cathode

Country Status (2)

Country Link
DE (1) DE748240C (en)
FR (1) FR839900A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH124626A (en) * 1926-04-06 1928-02-16 Philips Nv Process for the manufacture of oxide cathodes.
CH126289A (en) * 1926-04-06 1928-06-01 Philips Nv Process for the manufacture of oxide cathodes.
GB285538A (en) * 1926-11-09 1928-02-09 Ernest Yeoman Robinson Improvements in or relating to vacuum electric tube devices
DE566466C (en) * 1928-11-21 1932-12-16 Radio Roehren Lab Dr Nickel G Process for the production of a metallic intermediate layer made of silver between a base made of refractory metals and an emitting surface for coated glow cathodes
NL38588C (en) * 1933-07-01

Also Published As

Publication number Publication date
DE748240C (en) 1944-10-30

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