FR979273A - Lampes thermioniques amplificatrices - Google Patents

Lampes thermioniques amplificatrices

Info

Publication number
FR979273A
FR979273A FR979273DA FR979273A FR 979273 A FR979273 A FR 979273A FR 979273D A FR979273D A FR 979273DA FR 979273 A FR979273 A FR 979273A
Authority
FR
France
Prior art keywords
lamps
thermionic
amplifying
amplifying thermionic
thermionic lamps
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR979273A publication Critical patent/FR979273A/fr
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
FR979273D 1948-01-24 1949-01-19 Lampes thermioniques amplificatrices Expired FR979273A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB271244X 1948-01-24
GB10149X 1949-01-01

Publications (1)

Publication Number Publication Date
FR979273A true FR979273A (fr) 1951-04-24

Family

ID=26236361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR979273D Expired FR979273A (fr) 1948-01-24 1949-01-19 Lampes thermioniques amplificatrices

Country Status (4)

Country Link
US (1) US2553997A (fr)
CH (1) CH271244A (fr)
FR (1) FR979273A (fr)
GB (1) GB683061A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798903A (en) * 1951-03-16 1957-07-09 Henry M Spencer Signal amplification system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE421193A (fr) * 1936-04-25
BE422208A (fr) * 1936-06-22
NL47224C (fr) * 1936-09-01
AT160558B (de) * 1937-02-23 1941-07-25 Philips Patentverwaltung Elektrische Entladungsröhre.
BE427228A (fr) * 1937-03-30
BE428074A (fr) * 1937-05-14
US2232158A (en) * 1937-07-20 1941-02-18 Rca Corp Electron discharge device
GB511449A (en) * 1938-02-17 1939-08-18 Marconi Wireless Telegraph Co Improvements in or relating to electron discharge devices
BE442181A (fr) * 1940-01-30
US2272232A (en) * 1940-07-31 1942-02-10 Rca Corp Electron beam tube
US2390701A (en) * 1943-01-27 1945-12-11 Rca Corp Secondary electron emitter

Also Published As

Publication number Publication date
GB683061A (en) 1952-11-19
CH271244A (de) 1950-10-15
US2553997A (en) 1951-05-22

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