FR678210A - Improvements to electron discharge tube devices - Google Patents

Improvements to electron discharge tube devices

Info

Publication number
FR678210A
FR678210A FR678210DA FR678210A FR 678210 A FR678210 A FR 678210A FR 678210D A FR678210D A FR 678210DA FR 678210 A FR678210 A FR 678210A
Authority
FR
France
Prior art keywords
discharge tube
electron discharge
tube devices
devices
electron
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.)
Westinghouse Lamp Co
Original Assignee
Westinghouse Lamp Co
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 Westinghouse Lamp Co filed Critical Westinghouse Lamp Co
Application granted granted Critical
Publication of FR678210A publication Critical patent/FR678210A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/02—Electron-emitting electrodes; Cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
FR678210D 1928-07-12 1929-07-09 Improvements to electron discharge tube devices Expired FR678210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US292116A US2016152A (en) 1928-07-12 1928-07-12 Electron discharge device with indirectly heated cathode

Publications (1)

Publication Number Publication Date
FR678210A true FR678210A (en) 1930-03-20

Family

ID=23123293

Family Applications (1)

Application Number Title Priority Date Filing Date
FR678210D Expired FR678210A (en) 1928-07-12 1929-07-09 Improvements to electron discharge tube devices

Country Status (4)

Country Link
US (1) US2016152A (en)
DE (1) DE541781C (en)
FR (1) FR678210A (en)
GB (1) GB315375A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490096A (en) * 1946-05-01 1949-12-06 Rothstein Jerome Cathode anticontamination structure
US2641728A (en) * 1950-02-25 1953-06-09 Ibm Heater connector

Also Published As

Publication number Publication date
DE541781C (en) 1932-01-18
GB315375A (en) 1930-10-02
US2016152A (en) 1935-10-01

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