FR841828A - Improvements to electric discharge tubes - Google Patents

Improvements to electric discharge tubes

Info

Publication number
FR841828A
FR841828A FR841828DA FR841828A FR 841828 A FR841828 A FR 841828A FR 841828D A FR841828D A FR 841828DA FR 841828 A FR841828 A FR 841828A
Authority
FR
France
Prior art keywords
electric discharge
discharge tubes
tubes
electric
discharge
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 FR841828A publication Critical patent/FR841828A/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
FR841828D 1937-08-09 1938-08-08 Improvements to electric discharge tubes Expired FR841828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL208243X 1937-08-09

Publications (1)

Publication Number Publication Date
FR841828A true FR841828A (en) 1939-05-31

Family

ID=19778672

Family Applications (1)

Application Number Title Priority Date Filing Date
FR841828D Expired FR841828A (en) 1937-08-09 1938-08-08 Improvements to electric discharge tubes

Country Status (5)

Country Link
BE (1) BE429592A (en)
CH (1) CH208243A (en)
DE (1) DE737996C (en)
FR (1) FR841828A (en)
GB (1) GB517743A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526574A (en) * 1947-06-14 1950-10-17 Bell Telephone Labor Inc Secondary emitter

Also Published As

Publication number Publication date
CH208243A (en) 1940-01-15
GB517743A (en) 1940-02-07
BE429592A (en)
DE737996C (en) 1943-08-02

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