FR31437E - Lamp from t. s. f. - Google Patents

Lamp from t. s. f.

Info

Publication number
FR31437E
FR31437E FR31437DA FR31437E FR 31437 E FR31437 E FR 31437E FR 31437D A FR31437D A FR 31437DA FR 31437 E FR31437 E FR 31437E
Authority
FR
France
Prior art keywords
lamp
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)
Inventor
Jacques-Antoine-Mari Hawadier
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.)
FR DE LAMPES A INCANDESCENCE L
Original Assignee
FR DE LAMPES A INCANDESCENCE L
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 FR DE LAMPES A INCANDESCENCE L filed Critical FR DE LAMPES A INCANDESCENCE L
Application granted granted Critical
Publication of FR31437E publication Critical patent/FR31437E/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
FR31437D 1925-07-07 1925-07-07 Lamp from t. s. f. Expired FR31437E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR31437T 1925-07-07

Publications (1)

Publication Number Publication Date
FR31437E true FR31437E (en) 1927-03-12

Family

ID=8669239

Family Applications (1)

Application Number Title Priority Date Filing Date
FR31437D Expired FR31437E (en) 1925-07-07 1925-07-07 Lamp from t. s. f.

Country Status (1)

Country Link
FR (1) FR31437E (en)

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