FR688521A - Improvements to electronic discharge devices - Google Patents

Improvements to electronic discharge devices

Info

Publication number
FR688521A
FR688521A FR688521DA FR688521A FR 688521 A FR688521 A FR 688521A FR 688521D A FR688521D A FR 688521DA FR 688521 A FR688521 A FR 688521A
Authority
FR
France
Prior art keywords
discharge devices
electronic discharge
electronic
devices
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.)
Radiotechnique SA
Original Assignee
Radiotechnique SA
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 Radiotechnique SA filed Critical Radiotechnique SA
Application granted granted Critical
Publication of FR688521A publication Critical patent/FR688521A/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
FR688521D 1929-04-09 1929-04-09 Improvements to electronic discharge devices Expired FR688521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR688521T 1929-04-09

Publications (1)

Publication Number Publication Date
FR688521A true FR688521A (en) 1930-08-26

Family

ID=9026759

Family Applications (1)

Application Number Title Priority Date Filing Date
FR688521D Expired FR688521A (en) 1929-04-09 1929-04-09 Improvements to electronic discharge devices

Country Status (1)

Country Link
FR (1) FR688521A (en)

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