GB1302140A - - Google Patents

Info

Publication number
GB1302140A
GB1302140A GB4482571A GB4482571A GB1302140A GB 1302140 A GB1302140 A GB 1302140A GB 4482571 A GB4482571 A GB 4482571A GB 4482571 A GB4482571 A GB 4482571A GB 1302140 A GB1302140 A GB 1302140A
Authority
GB
United Kingdom
Prior art keywords
heater
plate
positions
emissive
sept
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
GB4482571A
Other languages
English (en)
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 filed Critical
Publication of GB1302140A publication Critical patent/GB1302140A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J1/15—Cathodes heated directly by an electric current

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
GB4482571A 1970-09-30 1971-09-27 Expired GB1302140A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7014337A NL7014337A (de) 1970-09-30 1970-09-30

Publications (1)

Publication Number Publication Date
GB1302140A true GB1302140A (de) 1973-01-04

Family

ID=19811188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4482571A Expired GB1302140A (de) 1970-09-30 1971-09-27

Country Status (7)

Country Link
US (1) US3694688A (de)
JP (1) JPS5345667B1 (de)
CA (1) CA934433A (de)
DE (1) DE2144710C3 (de)
FR (1) FR2108725A5 (de)
GB (1) GB1302140A (de)
NL (1) NL7014337A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108770A (en) * 1976-03-09 1977-09-12 Hitachi Ltd Manufacture for direct heat type cathode
JPS536560A (en) * 1976-07-07 1978-01-21 Hitachi Ltd Manufacture of cathode for direct heating type cathode ray tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440474A (en) * 1967-02-01 1969-04-22 Sylvania Electric Prod Resilient means for supporting a directly heated planar cathode
US3441767A (en) * 1967-02-01 1969-04-29 Sylvania Electric Prod Tensioned directly heated cathode having improved temperature characteristics

Also Published As

Publication number Publication date
DE2144710B2 (de) 1978-03-23
US3694688A (en) 1972-09-26
DE2144710C3 (de) 1978-12-14
CA934433A (en) 1973-09-25
NL7014337A (de) 1972-04-05
DE2144710A1 (de) 1972-04-06
FR2108725A5 (de) 1972-05-19
JPS5345667B1 (de) 1978-12-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee