FR823346A - Improvements to electric discharge tubes and devices incorporating them - Google Patents

Improvements to electric discharge tubes and devices incorporating them

Info

Publication number
FR823346A
FR823346A FR823346DA FR823346A FR 823346 A FR823346 A FR 823346A FR 823346D A FR823346D A FR 823346DA FR 823346 A FR823346 A FR 823346A
Authority
FR
France
Prior art keywords
electric discharge
discharge tubes
devices incorporating
incorporating
devices
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 FR823346A publication Critical patent/FR823346A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting 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
    • H01J1/13—Solid thermionic cathodes
FR823346D 1936-06-22 1937-06-21 Improvements to electric discharge tubes and devices incorporating them Expired FR823346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL78256A NL51881C (en) 1936-06-22 1936-06-22 Electron tube, provided with a secondary emission electrode

Publications (1)

Publication Number Publication Date
FR823346A true FR823346A (en) 1938-01-18

Family

ID=19786677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR823346D Expired FR823346A (en) 1936-06-22 1937-06-21 Improvements to electric discharge tubes and devices incorporating them

Country Status (5)

Country Link
BE (1) BE422206A (en)
FR (1) FR823346A (en)
GB (2) GB497589A (en)
NL (1) NL51881C (en)
SE (1) SE102953C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757225C (en) * 1938-08-30 1952-11-17 Lorenz C Ag Secondary electron multiplier with several impact electrodes arranged one behind the other and concentric to the primary electron source designed as a glow cathode

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE874176C (en) * 1939-03-25 1953-04-20 Sueddeutsche Telefon App Secondary electron multiplier with glow cathode
BE864567A (en) * 1977-04-25 1978-07-03 Chevron Res PROCESS FOR HYDROGENATION OF ESTERS INTO ACOOLS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757225C (en) * 1938-08-30 1952-11-17 Lorenz C Ag Secondary electron multiplier with several impact electrodes arranged one behind the other and concentric to the primary electron source designed as a glow cathode

Also Published As

Publication number Publication date
NL51881C (en) 1942-02-16
BE422206A (en) 1937-07-31
GB497589A (en) 1938-12-19
GB490652A (en) 1938-08-18
SE102953C1 (en) 1941-11-04

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