FR676301A - Electric discharge tubes - Google Patents

Electric discharge tubes

Info

Publication number
FR676301A
FR676301A FR676301DA FR676301A FR 676301 A FR676301 A FR 676301A FR 676301D A FR676301D A FR 676301DA FR 676301 A FR676301 A FR 676301A
Authority
FR
France
Prior art keywords
electric discharge
discharge tubes
tubes
electric
discharge
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.)
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 FR676301A publication Critical patent/FR676301A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
FR676301D 1928-07-18 1929-06-06 Electric discharge tubes Expired FR676301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676301X 1928-07-18

Publications (1)

Publication Number Publication Date
FR676301A true FR676301A (en) 1930-02-21

Family

ID=19802288

Family Applications (1)

Application Number Title Priority Date Filing Date
FR676301D Expired FR676301A (en) 1928-07-18 1929-06-06 Electric discharge tubes

Country Status (1)

Country Link
FR (1) FR676301A (en)

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