FR851749A - Improvements to secondary electron emitting electrodes - Google Patents

Improvements to secondary electron emitting electrodes

Info

Publication number
FR851749A
FR851749A FR851749DA FR851749A FR 851749 A FR851749 A FR 851749A FR 851749D A FR851749D A FR 851749DA FR 851749 A FR851749 A FR 851749A
Authority
FR
France
Prior art keywords
secondary electron
electron emitting
emitting electrodes
electrodes
emitting
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR851749A publication Critical patent/FR851749A/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
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
    • 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
    • H01J1/32—Secondary-electron-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Photovoltaic Devices (AREA)
FR851749D 1938-03-25 1939-03-17 Improvements to secondary electron emitting electrodes Expired FR851749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US197994A US2233276A (en) 1938-03-25 1938-03-25 Secondary electron emissive electrode

Publications (1)

Publication Number Publication Date
FR851749A true FR851749A (en) 1940-01-13

Family

ID=22731572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR851749D Expired FR851749A (en) 1938-03-25 1939-03-17 Improvements to secondary electron emitting electrodes

Country Status (4)

Country Link
US (1) US2233276A (en)
BE (1) BE433432A (en)
FR (1) FR851749A (en)
GB (1) GB526731A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL94756C (en) * 1952-05-01
US3072816A (en) * 1959-08-05 1963-01-08 Landis & Gry A G Electrode device and method of producing the same
US3756682A (en) * 1967-02-13 1973-09-04 Schlumberger Technology Corp Method for outgassing permanent magnets

Also Published As

Publication number Publication date
US2233276A (en) 1941-02-25
GB526731A (en) 1940-09-24
BE433432A (en)

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