FR581852A - Dispositif de chauffage - Google Patents

Dispositif de chauffage

Info

Publication number
FR581852A
FR581852A FR581852DA FR581852A FR 581852 A FR581852 A FR 581852A FR 581852D A FR581852D A FR 581852DA FR 581852 A FR581852 A FR 581852A
Authority
FR
France
Prior art keywords
heating device
heating
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)
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 FR581852A publication Critical patent/FR581852A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
FR581852D 1923-11-22 1924-05-20 Dispositif de chauffage Expired FR581852A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL225166X 1923-11-22

Publications (1)

Publication Number Publication Date
FR581852A true FR581852A (fr) 1924-12-08

Family

ID=19779605

Family Applications (1)

Application Number Title Priority Date Filing Date
FR581852D Expired FR581852A (fr) 1923-11-22 1924-05-20 Dispositif de chauffage

Country Status (2)

Country Link
FR (1) FR581852A (fr)
GB (1) GB225166A (fr)

Also Published As

Publication number Publication date
GB225166A (en) 1925-09-14

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