FR855142A - Oxide Coated Thermionic Cathode Tube - Google Patents

Oxide Coated Thermionic Cathode Tube

Info

Publication number
FR855142A
FR855142A FR855142DA FR855142A FR 855142 A FR855142 A FR 855142A FR 855142D A FR855142D A FR 855142DA FR 855142 A FR855142 A FR 855142A
Authority
FR
France
Prior art keywords
cathode tube
oxide coated
thermionic cathode
coated thermionic
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.)
MO Valve Co Ltd
Original Assignee
MO Valve Co Ltd
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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Application granted granted Critical
Publication of FR855142A publication Critical patent/FR855142A/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)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Sealing Material Composition (AREA)
FR855142D 1938-05-30 1939-05-22 Oxide Coated Thermionic Cathode Tube Expired FR855142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1611438A GB515371A (en) 1938-05-30 1938-05-30 Improvements in the manufacture of valves having oxide-coated thermionic cathodes

Publications (1)

Publication Number Publication Date
FR855142A true FR855142A (en) 1940-05-03

Family

ID=10071429

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855142D Expired FR855142A (en) 1938-05-30 1939-05-22 Oxide Coated Thermionic Cathode Tube

Country Status (3)

Country Link
BE (1) BE434475A (en)
FR (1) FR855142A (en)
GB (1) GB515371A (en)

Also Published As

Publication number Publication date
GB515371A (en) 1939-12-04
BE434475A (en)

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