GB646303A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB646303A
GB646303A GB1676/48A GB167648A GB646303A GB 646303 A GB646303 A GB 646303A GB 1676/48 A GB1676/48 A GB 1676/48A GB 167648 A GB167648 A GB 167648A GB 646303 A GB646303 A GB 646303A
Authority
GB
United Kingdom
Prior art keywords
cathode
electrode
focusing electrode
electron
operated
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
GB1676/48A
Other languages
English (en)
Inventor
Cabot Seaton Bull
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
Publication of GB646303A publication Critical patent/GB646303A/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

Landscapes

  • Microwave Tubes (AREA)
  • Solid Thermionic Cathode (AREA)
  • Electron Sources, Ion Sources (AREA)
GB1676/48A 1945-10-24 1945-10-24 Improvements in or relating to electron discharge devices Expired GB646303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20673/44A GB601966A (en) 1945-10-24 1945-10-24 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB646303A true GB646303A (en) 1950-11-22

Family

ID=32188948

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1676/48A Expired GB646303A (en) 1945-10-24 1945-10-24 Improvements in or relating to electron discharge devices
GB20673/44A Expired GB601966A (en) 1945-10-24 1945-10-24 Improvements in or relating to electron discharge devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB20673/44A Expired GB601966A (en) 1945-10-24 1945-10-24 Improvements in or relating to electron discharge devices

Country Status (6)

Country Link
US (1) US2602905A (US06573293-20030603-C00184.png)
CH (1) CH271504A (US06573293-20030603-C00184.png)
DE (1) DE818820C (US06573293-20030603-C00184.png)
FR (1) FR958107A (US06573293-20030603-C00184.png)
GB (2) GB646303A (US06573293-20030603-C00184.png)
NL (1) NL72121C (US06573293-20030603-C00184.png)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970327C (de) * 1936-03-07 1958-09-11 Pintsch Bamag Ag Einrichtung zum Buendeln ultrakurzer elektromagnetischer Wellen
AT160558B (de) * 1937-02-23 1941-07-25 Philips Patentverwaltung Elektrische Entladungsröhre.
NL50262C (US06573293-20030603-C00184.png) * 1937-03-30
BE428074A (US06573293-20030603-C00184.png) * 1937-05-14
US2390701A (en) * 1943-01-27 1945-12-11 Rca Corp Secondary electron emitter

Also Published As

Publication number Publication date
DE818820C (de) 1951-10-29
US2602905A (en) 1952-07-08
CH271504A (de) 1950-10-31
NL72121C (US06573293-20030603-C00184.png)
GB601966A (en) 1948-05-18
FR958107A (US06573293-20030603-C00184.png) 1950-03-03

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