FR658973A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number
FR658973A
FR658973A FR658973DA FR658973A FR 658973 A FR658973 A FR 658973A FR 658973D A FR658973D A FR 658973DA FR 658973 A FR658973 A FR 658973A
Authority
FR
France
Prior art keywords
electric discharge
discharge tube
tube
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 FR658973A publication Critical patent/FR658973A/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
FR658973D 1927-09-15 1928-08-13 Electric discharge tube Expired FR658973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1937735X 1927-09-15

Publications (1)

Publication Number Publication Date
FR658973A true FR658973A (en) 1929-06-22

Family

ID=19873340

Family Applications (1)

Application Number Title Priority Date Filing Date
FR658973D Expired FR658973A (en) 1927-09-15 1928-08-13 Electric discharge tube

Country Status (3)

Country Link
US (1) US1937735A (en)
BE (1) BE353553A (en)
FR (1) FR658973A (en)

Also Published As

Publication number Publication date
BE353553A (en)
US1937735A (en) 1933-12-05

Similar Documents

Publication Publication Date Title
FR674313A (en) Electric discharge tube
FR686234A (en) Electric discharge tube
FR686414A (en) Electric discharge tube
FR649051A (en) Electric discharge tube
FR669314A (en) Electric discharge tube
FR668025A (en) Electric discharge tube
FR685521A (en) Electric discharge tube
FR658896A (en) Electric discharge tube
FR642557A (en) Electric discharge tube
FR717583A (en) Electric discharge tube
FR723374A (en) Electric discharge tube
FR672469A (en) Electric discharge tubes
FR663119A (en) Arc discharge tube
FR649326A (en) Electric discharge tube
FR662768A (en) Electric discharge tube
FR662717A (en) Electric discharge tube
FR650700A (en) Electric discharge tube
FR645320A (en) Electric discharge tube
FR658973A (en) Electric discharge tube
FR674565A (en) Electric discharge tube
FR665991A (en) Electric discharge tube
FR727891A (en) Electric discharge tube
FR640517A (en) Electric discharge tube
FR629627A (en) Electric discharge tube
FR645419A (en) Electric discharge tube