NL63789C - - Google Patents

Info

Publication number
NL63789C
NL63789C NL63789DA NL63789C NL 63789 C NL63789 C NL 63789C NL 63789D A NL63789D A NL 63789DA NL 63789 C NL63789 C NL 63789C
Authority
NL
Netherlands
Application number
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.)
Publication of NL63789C publication Critical patent/NL63789C/xx

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/15Cathodes heated directly by an electric current
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
NL63789D 1946-11-13 NL63789C (en:Method)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL264502X 1946-11-13
CH230150T 1947-11-04

Publications (1)

Publication Number Publication Date
NL63789C true NL63789C (en:Method)

Family

ID=25727444

Family Applications (1)

Application Number Title Priority Date Filing Date
NL63789D NL63789C (en:Method) 1946-11-13

Country Status (7)

Country Link
US (1) US2489367A (en:Method)
BE (1) BE478149A (en:Method)
CH (1) CH264502A (en:Method)
DE (1) DE890389C (en:Method)
FR (1) FR57812E (en:Method)
GB (1) GB652382A (en:Method)
NL (1) NL63789C (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626370A (en) * 1949-05-26 1953-01-20 Rca Corp Filament structure for electron discharge device
US4100449A (en) * 1976-04-05 1978-07-11 Rca Corporation Uniform filament and method of making the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700454A (en) * 1924-07-08 1929-01-29 Western Electric Co Electron emitter and process of making the same
US2112969A (en) * 1926-12-11 1938-04-05 Rca Corp Cathode
NL38569C (en:Method) * 1933-06-24

Also Published As

Publication number Publication date
US2489367A (en) 1949-11-29
FR57812E (fr) 1953-09-17
CH264502A (de) 1949-10-15
BE478149A (en:Method)
DE890389C (de) 1953-09-17
GB652382A (en) 1951-04-25

Similar Documents

Publication Publication Date Title
FR959970A (en:Method)
FR956015A (en:Method)
FR957193A (en:Method)
BE467112R (en:Method)
BE475448A (en:Method)
BE474919A (en:Method)
NL72078C (en:Method)
NL67004C (en:Method)
NL66778C (en:Method)
NL63789C (en:Method)
NL66441C (en:Method)
BE507594A (en:Method)
BE465502A (en:Method)
BE480824A (en:Method)
BE479232A (en:Method)
BE475779A (en:Method)
BE472342A (en:Method)
BE471546A (en:Method)
BE479105A (en:Method)
BE478936A (en:Method)
BE478219A (en:Method)
BE477508A (en:Method)
BE477314A (en:Method)
BE476902A (en:Method)
BE476794A (en:Method)