FR643704A - Procédé de fabrication de cathodes munies d'un revêtement - Google Patents

Procédé de fabrication de cathodes munies d'un revêtement

Info

Publication number
FR643704A
FR643704A FR643704DA FR643704A FR 643704 A FR643704 A FR 643704A FR 643704D A FR643704D A FR 643704DA FR 643704 A FR643704 A FR 643704A
Authority
FR
France
Prior art keywords
manufacturing process
coated cathodes
cathodes
coated
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
English (en)
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 FR643704A publication Critical patent/FR643704A/fr
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)
  • Battery Electrode And Active Subsutance (AREA)
  • Solid Thermionic Cathode (AREA)
FR643704D 1926-11-25 1927-11-09 Procédé de fabrication de cathodes munies d'un revêtement Expired FR643704A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29828/26A GB282205A (en) 1926-11-25 1926-11-25 Improvements in or relating to electric discharge tubes

Publications (1)

Publication Number Publication Date
FR643704A true FR643704A (fr) 1928-09-21

Family

ID=10297834

Family Applications (1)

Application Number Title Priority Date Filing Date
FR643704D Expired FR643704A (fr) 1926-11-25 1927-11-09 Procédé de fabrication de cathodes munies d'un revêtement

Country Status (3)

Country Link
US (1) US1809229A (fr)
FR (1) FR643704A (fr)
GB (1) GB282205A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557096A (en) * 1981-12-30 1985-12-10 Oskar Hovde Wall boardings

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677623A (en) * 1949-10-27 1954-05-04 Ets Claude Paz & Silva Process for manufacturing electron emissive material and electrodes
US2631945A (en) * 1949-11-19 1953-03-17 Bell Telephone Labor Inc Cold cathode and method of preparing same
US2686735A (en) * 1951-01-03 1954-08-17 Rca Corp Cathode material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557096A (en) * 1981-12-30 1985-12-10 Oskar Hovde Wall boardings

Also Published As

Publication number Publication date
US1809229A (en) 1931-06-09
GB282205A (en) 1927-12-22

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