FR597805A - Cathodes à incandescence pour tubes de transmission - Google Patents

Cathodes à incandescence pour tubes de transmission

Info

Publication number
FR597805A
FR597805A FR597805DA FR597805A FR 597805 A FR597805 A FR 597805A FR 597805D A FR597805D A FR 597805DA FR 597805 A FR597805 A FR 597805A
Authority
FR
France
Prior art keywords
transmission tubes
incandescent cathodes
cathodes
incandescent
tubes
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)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR597805A publication Critical patent/FR597805A/fr
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
FR597805D 1924-05-21 1925-05-09 Cathodes à incandescence pour tubes de transmission Expired FR597805A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1682642X 1924-05-21

Publications (1)

Publication Number Publication Date
FR597805A true FR597805A (fr) 1925-11-30

Family

ID=19872956

Family Applications (1)

Application Number Title Priority Date Filing Date
FR597805D Expired FR597805A (fr) 1924-05-21 1925-05-09 Cathodes à incandescence pour tubes de transmission

Country Status (4)

Country Link
US (1) US1682642A (xx)
FR (1) FR597805A (xx)
GB (1) GB234442A (xx)
NL (1) NL16656C (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634921A (en) * 1984-07-03 1987-01-06 Sony Corporation Thermionic cathode heater

Also Published As

Publication number Publication date
GB234442A (xx) 1925-12-10
US1682642A (en) 1928-08-28
NL16656C (xx)

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