FR777070A - Surface activated incandescent cathode - Google Patents

Surface activated incandescent cathode

Info

Publication number
FR777070A
FR777070A FR777070DA FR777070A FR 777070 A FR777070 A FR 777070A FR 777070D A FR777070D A FR 777070DA FR 777070 A FR777070 A FR 777070A
Authority
FR
France
Prior art keywords
surface activated
incandescent cathode
incandescent
cathode
activated
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 FR777070A publication Critical patent/FR777070A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
FR777070D 1933-09-07 1934-08-09 Surface activated incandescent cathode Expired FR777070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE420289X 1933-09-07

Publications (1)

Publication Number Publication Date
FR777070A true FR777070A (en) 1935-02-11

Family

ID=6450765

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777070D Expired FR777070A (en) 1933-09-07 1934-08-09 Surface activated incandescent cathode

Country Status (2)

Country Link
FR (1) FR777070A (en)
GB (1) GB420289A (en)

Also Published As

Publication number Publication date
GB420289A (en) 1934-11-28

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