FR690690A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number
FR690690A
FR690690A FR690690DA FR690690A FR 690690 A FR690690 A FR 690690A FR 690690D A FR690690D A FR 690690DA FR 690690 A FR690690 A FR 690690A
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 FR690690A publication Critical patent/FR690690A/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
FR690690D 1929-04-13 1930-02-26 Electric discharge tube Expired FR690690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL346096X 1929-04-13

Publications (1)

Publication Number Publication Date
FR690690A true FR690690A (en) 1930-09-24

Family

ID=19784900

Family Applications (1)

Application Number Title Priority Date Filing Date
FR690690D Expired FR690690A (en) 1929-04-13 1930-02-26 Electric discharge tube

Country Status (3)

Country Link
US (1) US1937736A (en)
FR (1) FR690690A (en)
GB (1) GB346096A (en)

Also Published As

Publication number Publication date
GB346096A (en) 1931-04-09
US1937736A (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
FR669314A (en) Electric discharge tube
FR649051A (en) Electric discharge tube
FR47656E (en) Electric discharge tube
FR45132E (en) Electric discharge tube
FR685521A (en) Electric discharge tube
FR668025A (en) Electric discharge tube
FR723374A (en) Electric discharge tube
FR717583A (en) Electric discharge tube
FR672469A (en) Electric discharge tubes
FR727891A (en) Electric discharge tube
FR697232A (en) Electric discharge tube
FR683222A (en) Electric discharge tube
FR690690A (en) Electric discharge tube
FR686623A (en) Electric discharge tube
FR665991A (en) Electric discharge tube
FR674565A (en) Electric discharge tube
FR699861A (en) Electric discharge tubes
FR696846A (en) Electric discharge tubes
FR679499A (en) Electric discharge tubes
FR658896A (en) Electric discharge tube
FR642557A (en) Electric discharge tube
FR691747A (en) Gas-filled electric discharge tube